Federal corporations in Toronto, Ontario
91,458 active corporations have their registered office here. Page 343 of 458.
| Company | Governing act | Registered |
|---|---|---|
| One Way Path Group Limited No. 11162896 · 77 Bloor St W · M5S 1M2 | CBCA | 24 December 2018 |
| One Whisker Inc. No. 12263157 · 39 Ruscica Drive · M4A 1R2 | CBCA | 12 August 2020 |
| One Wish Center No. 15393892 · 4675 Steeles Avenue East, UNIT 2D7 · M1V 0B7 | NFP Act | 26 September 2023 |
| One World Bancorp Inc. No. 9718664 · 1 Eglinton Avenue East · M4P 3A1 | CBCA | 20 April 2016 |
| One World Foods Inc.Dissolution pending No. 8901074 · 108 Dawlish Ave · M4N 1H3 | CBCA | 27 May 2014 |
| One World Many Voices Foundation No. 17975422 · 403-70 Yorkville Ave · M5R 1B9 | NFP Act | 28 May 2026 |
| One World Media Interactive Corp. No. 8868972 · 1003 Logan Ave · M4K 3E6 | CBCA | 27 April 2014 |
| ONE WORLD MISSIONS OUTREACH No. 8388229 · 326 REXDALE BLVD · M9W 1R6 | NFP Act | 12 February 2013 |
| One Zero Consulting Inc.Dissolution pending No. 14820070 · 50 Bruyeres Mews · M5V 0H8 | CBCA | 5 March 2023 |
| One’s Not Enough Inc. No. 15408121 · 930 Queens Plate Drive · M9W 6Z5 | CBCA | 1 October 2023 |
| One4All Foundation No. 17427239 · Unit 2007-2100 Weston Rd · M9N 3W6 | NFP Act | 27 October 2025 |
| One6IT Consulting Inc. No. 14970527 · 218 Queens Quay W · M5J 2Y6 | CBCA | 26 April 2023 |
| OneBridge Risk and Warranty Solutions Inc. No. 17528051 · TD Canada Trust Tower · M5J 2S1 | CBCA | 5 December 2025 |
| OneChurch.to No. 7597371 · 2885 KENNEDY ROAD · M1V 1S8 | NFP Act | 20 March 2014 |
| ONECORE ENTERTAINMENT GROUP INC. No. 17927274 · 296 Dunforest · M2M 3L1 | CBCA | 11 May 2026 |
| Onecraft Carpentry Inc. No. 15238838 · 133 Fairview Ave · M6P 3A6 | CBCA | 29 July 2023 |
| OneDerKart Corp. No. 13759644 · 195 Redpath Ave · M4P 0E4 | CBCA | 8 February 2022 |
| OneDrug Inc. No. 15160774 · 4 Devonshire Place · M5S 2E1 | CBCA | 29 June 2023 |
| OneElevate Tech Inc. No. 16617581 · 17 Anndale Dr · M2N 2W7 | CBCA | 24 December 2024 |
| OneFive Inc. No. 7925468 · 150 King St. W. Suite 200 · M5H 1J9 | CBCA | 22 July 2011 |
| OneFlashDrive, Inc. No. 7035551 · 1087 BLOOR ST. W., SUITE 207 · M6H 1M5 | CBCA | 29 August 2008 |
| OneForest Inc. No. 16665918 · 2967 Dundas St West · M6P 1Z2 | CBCA | 14 January 2025 |
| OneHabit Corp. No. 15577021 · 195 Andona Crescent · M1C 5J7 | CBCA | 3 December 2023 |
| ONEHILL CONSTRUCTION INC.Dissolution pending No. 16209823 · 1- 302 WILMINGTON AVE. · M3H 5K7 | CBCA | 15 July 2024 |
| Oneinm Inc. No. 14579011 · 439 University Avenue · M5G 1Y8 | CBCA | 5 December 2022 |
| Oneiros Music Group Inc. No. 14709241 · 925-20 Minowan Miikan Lane · M6J 0E5 | CBCA | 25 January 2023 |
| Oneness Community Foundation No. 14902840 · 78 Huntington Avenue · M1K 4L2 | NFP Act | 1 April 2023 |
| Oneness Research Foundation No. 14948891 · 78 Huntington Avenue · M1K 4L2 | NFP Act | 18 April 2023 |
| onEnviro LTD. No. 8335591 · 19 Tilson Rd · M4S 1P3 | CBCA | 25 October 2012 |
| Oneply Inc. No. 15073243 · M160-1460 The Queensway · M8Z 1S4 | CBCA | 30 May 2023 |
| ONERELIEF COMMUNITY SERVICES No. 15026334 · 545 King St W, Suite 104 · M5V 1M1 | NFP Act | 15 May 2023 |
| OneRingAI Inc. No. 16548415 · 8 Rean Drive，Suite 1708 · M2K 3B9 | CBCA | 25 November 2024 |
| ONESANS CONSTRUCTION LTD. No. 17092971 · 33 Davisville Ave · M4S 2Y9 | CBCA | 19 June 2025 |
| OneSMI Inc. No. 10373079 · 26 Robinglade Dr · M9B 2R1 | CBCA | 21 August 2017 |
| OneSound Charity Canada Corporation No. 17706901 · 2220 Midland Ave · M1P 3E6 | NFP Act | 18 February 2026 |
| ONESOURCE RISK MANAGEMENT CANADA INC. No. 8078548 · 199 Bay Street, Ste. 4000 · M5L 1A9 | CBCA | 12 January 2012 |
| ONESQR INC. No. 16074294 · 2136 Codlin Crescent · M9W 5K7 | CBCA | 27 May 2024 |
| Onestep Property Solutions Inc. No. 12503409 · 36 Adencliff Road, Scarborough, On, Cana · M1W 1N2 | CBCA | 17 November 2020 |
| OneStepAhead Consulting Inc. No. 8957690 · 87 Bankview Cl · M9W 6S5 | CBCA | 17 July 2014 |
| Onestop Property Care Inc. No. 18129169 · 2682 Danforth Ave · M4C 1L7 | CBCA | 30 July 2026 |
| OneStop Ride Inc. No. 11256475 · 78 PORTERFIELD RD · M9W 3J8 | CBCA | 18 February 2019 |
| Onestop Staffing Inc. No. 12442019 · 402-255 Dovercourt Road · M6J 3C9 | CBCA | 23 October 2020 |
| OneStop Team Realty Inc. No. 10150169 · 45 Harbour Square, Suite 1 · M5J 2G4 | CBCA | 18 March 2017 |
| OneStopCanada Professional Services Inc. No. 12216680 · 64 Mason Road · M1M 3R2 | CBCA | 22 July 2020 |
| OneTide Inc. No. 16355935 · 19 Rosebank Dr UNIT 1703 · M1B 5Z2 | CBCA | 10 September 2024 |
| OneTrack Media inc. No. 17395591 · 527 Logan Ave · M4K 3B3 | CBCA | 14 October 2025 |
| OneTree Marketing inc. No. 15327679 · 30 Roehampton Ave · M4P 0B9 | CBCA | 31 August 2023 |
| OneUmmah Foundation of North America No. 15616352 · 5 Brockley Drive · M1P 3J2 | NFP Act | 19 December 2023 |
| OneVest Technologies Inc. No. 12721686 · 100 King Street West, Suite 6200 · M5X 1B8 | CBCA | 8 February 2021 |
| Onewest International Inc. No. 13607925 · 1 Valhalla Inn Road · M9B 1S9 | CBCA | 18 December 2021 |
| ONEX CAPITAL V CARRYCO (A) INC. No. 11966324 · 161 Bay Street, Suite 4900 · M5J 2S1 | CBCA | 18 March 2020 |
| ONEX CAPITAL V CARRYCO (B) INC. No. 11966316 · 161 Bay Street, Suite 4900 · M5J 2S1 | CBCA | 18 March 2020 |
| ONEX CAPITAL V CARRYCO (C) INC. No. 11966308 · 161 Bay Street, Suite 4900 · M5J 2S1 | CBCA | 18 March 2020 |
| ONEX CAPITAL V CARRYCO (D) INC. No. 11966294 · 161 Bay Street, Suite 4900 · M5J 2S1 | CBCA | 18 March 2020 |
| ONEX CAPITAL V CARRYCO (E) INC. No. 11966286 · 161 Bay Street, Suite 4900 · M5J 2S1 | CBCA | 18 March 2020 |
| ONEX CAPITAL V CARRYCO (F) INC. No. 11966260 · 161 Bay Street, Suite 4900 · M5J 2S1 | CBCA | 18 March 2020 |
| ONEX CAPITAL V CARRYCO (G) INC. No. 11966243 · 161 Bay Street, Suite 4900 · M5J 2S1 | CBCA | 18 March 2020 |
| ONEX CAPITAL V CARRYCO (H) INC. No. 11966235 · 161 Bay Street, Suite 4900 · M5J 2S1 | CBCA | 18 March 2020 |
| ONEX CAPITAL V CARRYCO (I) INC. No. 11966227 · 161 Bay Street, Suite 4900 · M5J 2S1 | CBCA | 18 March 2020 |
| ONEX CAPITAL V CARRYCO (J) INC. No. 11966162 · 161 Bay Street, Suite 4900 · M5J 2S1 | CBCA | 18 March 2020 |
| ONEX CAPITAL V CARRYCO (K) INC. No. 12934353 · 161 Bay Street, Suite 4900 · M5J 2S1 | CBCA | 16 April 2021 |
| ONEX CAPITAL V CARRYCO (L) INC. No. 12934388 · 161 Bay Street, Suite 4900 · M5J 2S1 | CBCA | 16 April 2021 |
| ONEX CAPITAL V CARRYCO (M) INC. No. 12934396 · 161 Bay Street, Suite 4900 · M5J 2S1 | CBCA | 16 April 2021 |
| ONEX CAPITAL V CARRYCO (N) INC. No. 12934418 · 161 Bay Street, Suite 4900 · M5J 2S1 | CBCA | 16 April 2021 |
| ONEX CAPITAL V CARRYCO (O) INC. No. 12934426 · 161 Bay Street, Suite 4900 · M5J 2S1 | CBCA | 16 April 2021 |
| Onex ILAC EI II Limited No. 11504720 · 161 Bay Street · M5J 2S1 | CBCA | 9 July 2019 |
| ONEX ILAC EI LIMITED No. 11504711 · 161 Bay Street · M5J 2S1 | CBCA | 9 July 2019 |
| Onex Walter EI II Limited No. 10979872 · 161 Bay Street · M5J 2S1 | CBCA | 6 September 2018 |
| Onex Walter EI Limited No. 10979830 · 161 Bay Street · M5J 2S1 | CBCA | 6 September 2018 |
| ONEXHAUST INC. No. 16259995 · 602 Magnetic Dr · M3J 2C4 | CBCA | 1 August 2024 |
| OneZip Inc. No. 13673162 · 5605 - 386 Yonge Street · M5B 0A5 | CBCA | 12 January 2022 |
| ONFIRE RESTAURANTS INC. No. 9017666 · 3-91 Windemere Ave · M6S 3J3 | CBCA | 12 September 2014 |
| OnGaming Canada Inc. No. 11616323 · 10 Delisle Avenue · M4V 3C6 | CBCA | 9 September 2019 |
| Ongeri HOLDINGS INC. No. 17867646 · 81 Brookmill Blvd · M1W 2H3 | CBCA | 17 April 2026 |
| Ongi Wear Inc. No. 17732384 · 86 Shanly St · M6H 1S7 | CBCA | 27 February 2026 |
| OnGymm Wellness Club Inc.Dissolution pending No. 15896231 · 4 Park Vista · M4B 3M8 | CBCA | 26 March 2024 |
| OnHive Inc. No. 8805288 · 1460 The Queensway, Unit DT 33 · M8Z 1S4 | CBCA | 28 February 2014 |
| ONI-SYSTEMS CORP. No. 7196776 · 303 DOVERCOURT ROAD · M6J 3E2 | CBCA | 25 June 2009 |
| ONI.CA.AL LTD. No. 17567111 · Unit 314-1833 Bayview Ave. · M6P 2P7 | CBCA | 22 December 2025 |
| ONIARE HOLDINGS INC. No. 17431431 · 64 Castle Frank Cres. · M4W 3A3 | CBCA | 28 October 2025 |
| Onik Tax Services Inc. No. 13531201 · 3098 Danforth Avenue · M1L 1B1 | CBCA | 20 November 2021 |
| ONIM3 HEALTH SERVICES INC.Dissolution pending No. 14195795 · 35 Boulderbrook Drive · M1X 2C1 | CBCA | 11 July 2022 |
| OniMoni Inc. No. 16297064 · 3-84 Munro St · M4M 2S9 | CBCA | 17 August 2024 |
| Onique Group Inc. No. 16044905 · 18 Harbour Street · M5J 2Z6 | CBCA | 23 May 2024 |
| ONIRIC INC. No. 15224594 · 19 Montvale Drive · M1M 3E5 | CBCA | 24 July 2023 |
| ONIT Capital Investment Corporation No. 11355074 · 8 Suncrest Drive · M3C 2L2 | CBCA | 12 April 2019 |
| Onit Consulting Ltd. No. 9478272 · 33 Cloebury Ct · M2R 1V7 | CBCA | 18 October 2015 |
| Onit Development Inc. No. 6991653 · 170 The Donway West · M3C 2J2 | CBCA | 10 June 2008 |
| ONIT Holdings Inc. No. 13850366 · 2 Bloor St E · M4W 1A8 | CBCA | 10 March 2022 |
| Onixo Inc. No. 9427716 · 34 Greengate Road · M3B 1E8 | CBCA | 2 September 2015 |
| ONLFH Corp. No. 14511310 · 705-755 Steeles Avenue West · M2R 2S6 | CBCA | 7 November 2022 |
| Online Exercise Coaching Inc.Dissolution pending No. 15853532 · 10 Douro Street · M6K 3M4 | CBCA | 11 March 2024 |
| Online Refinement Inc.Dissolution pending No. 7919913 · 165 Joicey Blvd · M5M 2V3 | CBCA | 18 July 2011 |
| OnlinePools.com Inc. No. 8087814 · 6 Belsize Drive · M4S 1L4 | CBCA | 24 January 2012 |
| OnlineUs Inc. No. 17463618 · 18 King St E · M5C 1C4 | CBCA | 10 November 2025 |
| Onlure Technologies Inc. No. 17433069 · 3 Concord Cityplace Way · M5V 0X4 | CBCA | 28 October 2025 |
| Only (Dot) Realty Corp. No. 16520898 · 2100 Bloor St W · M6S 1N4 | CBCA | 13 November 2024 |
| ONLY 2 GO CONVENIENCE STORE INC. No. 16766773 · 381 DONLANDS AVE · M4J 3S2 | CBCA | 19 February 2025 |
| Only Auto Stock Inc. No. 15922038 · 37 Kodiak Crescent Unit 6 · M3J 3E5 | CBCA | 4 April 2024 |
| Only Dawgs 6ix Inc. No. 15146992 · 219 Fort York Blvd Suite 3611 · M5V 1B1 | CBCA | 25 June 2023 |
| ONLY PROBATE INC. No. 13893472 · VIBE Centre · M9A 1B9 | CBCA | 24 March 2022 |
| Only Zuul Holdings Inc. No. 11926705 · 468 QUEEN STREET EAST · M5A 1T4 | CBCA | 26 February 2020 |
| OnlyReal Entertainment Incorporated No. 8213500 · 155 Tyrrel Ave · M6G 2G6 | CBCA | 8 June 2012 |
| ONMonde Inc. No. 17698895 · 14 York St · M5J 0B1 | CBCA | 14 February 2026 |
| Onobio Capital Corp.Dissolution pending No. 12865971 · 150 King Street West · M5H 3T9 | CBCA | 25 March 2021 |
| Onoj Bakery & Pastry House Inc. No. 16647391 · 108 Waterbury Dr · M9R 3Y3 | CBCA | 7 January 2025 |
| OnOrder Inc. No. 14577833 · 100 King Street West, Suite 6200 · M5X 1B8 | CBCA | 5 December 2022 |
| Onose Immigration Consulting Limited No. 15794218 · 1058a Albion Rd · M9V 1A7 | CBCA | 21 February 2024 |
| Onova Canada Inc. No. 12305020 · 226 Carlton Street · M5A 2L1 | CBCA | 30 August 2020 |
| OnPoint Education No. 10940429 · 125A Jefferson Ave · M6K 3E4 | NFP Act | 10 August 2018 |
| OnPoint Employment Solutions Inc. No. 9013989 · 80 NASHDENE ROAD, UNIT 67 · M1V 5E4 | CBCA | 9 September 2014 |
| Onravo Inc. No. 14351274 · 15-1120 Tapscott Road · M1X 1E8 | CBCA | 7 September 2022 |
| Onsar Constructing Groups Inc. No. 14482981 · 429-650 Sheppard Avenue East · M2K 3E4 | CBCA | 26 October 2022 |
| OnSet Locations Inc.Dissolution pending No. 16061991 · 39 Forest Point. · M6M 5E9 | CBCA | 23 May 2024 |
| Onshore Development Group Inc. No. 17368356 · 291 Woodbine Ave · M4L 3P3 | CBCA | 2 October 2025 |
| Onsite Power Partners Ltd. No. 11578448 · 840 - 121 King St W · M5H 3T9 | CBCA | 20 August 2019 |
| ONSODA INTERNATIONAL LTD. No. 7172010 · 1109-7 CONCORDE PL · M3C 3N4 | CBCA | 11 May 2009 |
| ONSPARK CONSULTING INC. No. 9429123 · 13 Helena Avenue · M6G 2H3 | CBCA | 3 September 2015 |
| ONTA Ventures Inc. No. 17537956 · 86 Taysham Crescent · M9V 1X3 | CBCA | 10 December 2025 |
| Ontady Inc. No. 15980615 · 411 Royal York Rd · M8Y 2R8 | CBCA | 25 April 2024 |
| ONTAMEDIA INC. No. 11877119 · 6 Douglas Cres · M4W 2E7 | CBCA | 30 January 2020 |
| OntaOnta Education Inc. No. 7876483 · 28 Welsford Gardens, Suite 406 · M3A 2P5 | CBCA | 7 June 2011 |
| Ontarcolors inc. No. 16999476 · 181 Bay St. · M5J 2T3 | CBCA | 16 May 2025 |
| Ontario Academy of Music & Art Inc. No. 11566512 · 39B Wharfside Lane · M1C 5K8 | CBCA | 13 August 2019 |
| ONTARIO AFGHAN FAMILY AND SENIORS SERVICES ASSOCIATION (OAFSSA) No. 4382927 · 18 THORNCLIFFE PARK DRIVE · M4H 1N7 | NFP Act | 15 July 2016 |
| ONTARIO ALLIANCE OF PEST MANAGEMENT PROFESSIONALS No. 10324795 · 100 Rexdale Blvd, Suite 301 G · M9W 1N7 | NFP Act | 17 July 2017 |
| ONTARIO APPLIANCE MEDIC LIMITED No. 17345453 · 15 Guildwood Pkwy · M1E 1E2 | CBCA | 23 September 2025 |
| Ontario Art Rentals Incorporated No. 6990711 · 100 King St W · M5X 1C9 | CBCA | 9 June 2008 |
| Ontario Association for Amputee CareDissolution pending No. 13601501 · A116 -285 Cummer Avenue, Sunnybrook HSC · M2M 2G1 | NFP Act | 16 December 2021 |
| Ontario Association of Black Paralegals No. 12630966 · 551 Gerrard St E · M4M 1X7 | NFP Act | 8 January 2021 |
| Ontario Association of Craniofacial Trauma Surgeons No. 12487047 · 2075 Bayview Avenue · M4N 3M5 | NFP Act | 11 November 2020 |
| Ontario Association of Osteopathic Practitioners No. 4497741 · 250 Consumers Rd · M2J 4V6 | NFP Act | 12 June 2013 |
| ONTARIO AWAMI LEAGUE CANADA No. 15518351 · 1209-1 MASSEY SQUARE · M4C 5L4 | NFP Act | 10 November 2023 |
| Ontario Beauty Love Club No. 10413216 · 7 Fulbert Crescent · M1S 1C2 | NFP Act | 19 September 2017 |
| Ontario Black Contractors Association No. 14644743 · 51 Wolseley Street · M5T 1A5 | NFP Act | 3 January 2023 |
| Ontario Black Doula Society No. 12198151 · 481 Vaughan Road · M6C 2P6 | NFP Act | 15 July 2020 |
| ONTARIO BRAIN INSTITUTE No. 4547381 · 1 Richmond Street West · M5H 3W4 | NFP Act | 2 April 2013 |
| ONTARIO BRAIN INSTITUTE FOUNDATION No. 4554027 · 1 Richmond Street West · M5H 3W4 | NFP Act | 28 April 2014 |
| ONTARIO BUDGET COMFORT INC. No. 15954151 · 121 - 155 Downsview Park Blvd · M3K 0E3 | CBCA | 16 April 2024 |
| Ontario Business Support Inc. No. 13933911 · 650 Bathurst Street · M5S 2R1 | CBCA | 8 April 2022 |
| Ontario BZT Integrative Health College No. 17387750 · 178 Bonis Ave · M1T 3V7 | NFP Act | 9 October 2025 |
| ONTARIO CARDIAC CENTRE No. 7815395 · 4675 Steeles Ave East · M1V 0B7 | NFP Act | 18 January 2017 |
| ONTARIO CFM INC. No. 11673033 · 55 Verwood Avenue · M3H 2K8 | CBCA | 9 October 2019 |
| Ontario Chapter, Metals Service Center Institute No. 11697528 · Dynamic Funds Tower · M5C 2V9 | NFP Act | 23 October 2019 |
| Ontario Children's Advancement Coalition No. 12106043 · 23 Isabella St · M4Y 1M7 | NFP Act | 4 June 2020 |
| Ontario Chiropractic Association No. 10905291 · 70 University Avenue · M5J 2M4 | NFP Act | 8 August 2018 |
| ONTARIO CHRISTIAN GOSPEL CENTER No. 9838406 · 30 Drewry Ave · M2M 4C4 | NFP Act | 20 July 2016 |
| Ontario Clean Technology Alliance No. 10971685 · 150 Gledhill Avenue · M4C 5L1 | NFP Act | 30 August 2018 |
| Ontario Clean Technology Industry Association No. 11197410 · 192 Spadina Ave. · M5T 2C2 | NFP Act | 15 January 2019 |
| Ontario College of Teachers Foundation No. 4148011 · 101 BLOOR STREET WEST · M5S 0A1 | NFP Act | 1 October 2014 |
| ONTARIO COLLEGE OF TRADITIONAL CHINESE MEDICINE TORONTO INC. No. 9749217 · 283 Spadina Ave. · M5T 2E3 | CBCA | 11 May 2016 |
| Ontario Construction Contractors Inc. No. 8762317 · 263 Forest Hill Road · M5P 2N3 | CBCA | 20 October 2014 |
| Ontario Construction Practices Initiative Inc. No. 14216393 · 47 Gihon Spring Drive · M9V 4S4 | CBCA | 18 July 2022 |
| Ontario Corporate Practices Initiative Inc. No. 15214114 · 47 Gihon Spring Drive · M9V 4S4 | CBCA | 20 July 2023 |
| Ontario Council For International Cooperation No. 16015581 · 192 Spadina Ave, 300 · M5T 2C2 | NFP Act | 25 July 2024 |
| Ontario Council on Articulation and Transfer No. 7936834 · 180 Dundas Street West · M5G 1Z8 | NFP Act | 5 March 2012 |
| Ontario Culture Days No. 9076883 · 401 Richmond Street West, Suite 403 · M5V 3A8 | NFP Act | 23 January 2015 |
| Ontario DAO No. 16657800 · 130 Queens Quay E · M5A 0P6 | NFP Act | 11 January 2025 |
| ONTARIO DARFUR WOMEN'S ORGANIZATION No. 16965491 · 1109-100 LEEWARD GLENWAY · M3C 2Z1 | NFP Act | 5 May 2025 |
| Ontario Dynamics Validation Inc. No. 14444710 · 1450 O'Connor Dr · M4B 2T8 | CBCA | 12 October 2022 |
| ONTARIO ELECTRICAL GROUP INC. No. 12259630 · 5 Haas Road · M9W 3A1 | CBCA | 11 August 2020 |
| Ontario Employment Education & Research Centre No. 4354729 · 720 SPADINA AVE · M5S 2T9 | NFP Act | 9 May 2014 |
| ONTARIO ENERGY ASSOCIATION No. 3973662 · 121 RICHMOND STREET WEST · M5H 2K1 | NFP Act | 26 November 2013 |
| Ontario eSecondary School Inc. No. 10346322 · 405-3390 Weston Road · M9M 2X3 | CBCA | 31 July 2017 |
| ontario fast cleaning Inc. No. 15605709 · 2221 Yonge St · M4S 0B8 | CBCA | 14 December 2023 |
| ONTARIO FOUNDATION FOR GLOBAL CITIZENSHIP No. 7937385 · 215 SPADINA AVENUE · M5T 2C7 | NFP Act | 14 October 2014 |
| Ontario Game Testers Inc. No. 14279336 · 984 Bathurst St · M5R 3G6 | CBCA | 10 August 2022 |
| ONTARIO GENOMICS INSTITUTE No. 3823296 · 130 King St W · M5X 2A2 | NFP Act | 31 October 2013 |
| Ontario Global Auto Export Inc. No. 17470797 · 55 Wynford Heights Crescent #1014 · M3C 1L4 | CBCA | 13 November 2025 |
| Ontario Health Care Agency Plus Ltd. No. 15681103 · 20 Olive Ave · M2N 7G5 | CBCA | 13 January 2024 |
| Ontario Home Medical Equipment Providers Association No. 3642640 · 5200 Yonge Street · M2N 5P6 | NFP Act | 21 May 2015 |
| Ontario Home Protection Inc. No. 8824380 · 4544 Dufferin Street - 201 · M3H 5X2 | CBCA | 19 March 2014 |
| Ontario hostel and employment Agency Inc. No. 16290051 · 28-79 Clearview Heights · M6M 2A4 | CBCA | 14 August 2024 |
| ONTARIO HOUSING AND EMPLOYMENT SOLUTIONS INC. No. 16452043 · 202- 86 Guided Ct · M9V 4K6 | CBCA | 16 October 2024 |
| Ontario HVAC Solutions Inc.Dissolution pending No. 16117350 · 12 Shaunavon Heights Crescent · M3A 2P4 | CBCA | 11 June 2024 |
| Ontario Institute for Cancer Research No. 3974472 · 661 UNIVERSITY AVENUE · M5G 0A3 | NFP Act | 17 July 2014 |
| Ontario Institute for Studying and Performing Islam (OISPI) No. 16885276 · 20 Samya Ct · M1R 2A5 | NFP Act | 4 April 2025 |
| ONTARIO IPOB FAMILY Inc. No. 14583418 · 1923 Weston Road · M9N 1W7 | NFP Act | 6 December 2022 |
| Ontario Iron Group Inc. No. 16689833 · 2-1558 Avenue Rd · M5M 3X5 | CBCA | 23 January 2025 |
| Ontario Jewish Education Association No. 12221497 · 788 Marlee Avenue · M6B 3K1 | NFP Act | 24 July 2020 |
| Ontario Jiu-jitsu Community Development Foundation No. 17333510 · 225 Sparks Ave · M2H 2S5 | NFP Act | 19 September 2025 |
| Ontario Justice Education Network No. 4012224 · 180 DUNDAS STREET WEST · M5G 1Z8 | NFP Act | 9 July 2014 |
| Ontario Korean Businessmen's Association Foundation No. 17782811 · 169 The West Mall · M9C 1C2 | NFP Act | 18 March 2026 |
| Ontario Land Trust Alliance Inc. No. 4090756 · 192 Spadina Ave #300 · M5T 2C2 | NFP Act | 15 August 2014 |
| Ontario Medical Rehabilitation Clinic inc. No. 11253204 · 122 Baycrest Ave · M6A 1W5 | CBCA | 15 February 2019 |
| ONTARIO MICROBREWED GAMES INCORPORATED No. 8058385 · 104 South Kingsway · M6S 3T3 | CBCA | 20 December 2011 |
| Ontario Mock Trial Alliance No. 16538886 · 45 Madison Ave · M5R 2S2 | NFP Act | 20 November 2024 |
| Ontario Mom and Baby Centres Inc. No. 16096557 · 20 De Boers Drive · M3J 0H1 | CBCA | 4 June 2024 |
| Ontario Muslim Association No. 13877612 · 230 Oak Street · M5A 2E2 | NFP Act | 19 March 2022 |
| Ontario Online Learning Consortium No. 9041290 · 372 Bay Street · M5H 2W9 | NFP Act | 3 October 2014 |
| ONTARIO PARKING GATES inc. No. 12197464 · 114 Melrose Street · M8Y 1B3 | CBCA | 14 July 2020 |
| ONTARIO PICKLEBALL ACADEMY INC. No. 14393112 · 66 Sunnycrest Road · M2R 2T4 | CBCA | 23 September 2022 |
| Ontario Precise AG Tech Inc. No. 17999828 · 5007-125 Blue Jays Way · M5V 0N5 | CBCA | 8 June 2026 |
| Ontario Preparatory Academy Inc. No. 15946468 · 3 Frizzell Ave · M4K 1H8 | CBCA | 13 April 2024 |
| Ontario Private Equity Securities Ltd. No. 9349880 · 1300 Islington Ave · M9A 5C4 | CBCA | 28 June 2015 |
| Ontario Professional Fire Fighters Association Charitable Foundation No. 11353292 · 15 Wellesley Street West · M4Y 0G7 | NFP Act | 11 April 2019 |
| ONTARIO PROUD No. 10102601 · 151 Yonge St. · M5C 2W7 | NFP Act | 13 February 2017 |
| ONTARIO RAILROAD CONTRACTORS ASSOCIATION No. 10433748 · 155 Wellington Street West, Suite 3600 · M5V 3H1 | NFP Act | 3 October 2017 |
| Ontario Real Estate Law Clerks Association No. 9798765 · 4168 Finch Ave. E. Suite 308 · M1S 5H6 | NFP Act | 18 June 2016 |
| Ontario Real Estate Lawyers Association No. 7713428 · 4168 FINCH AVE. E. · M1S 5H6 | NFP Act | 11 April 2013 |