| Ocean Park Congregation of Jehovah's Witnesses White Rock British Columbia | Surrey | $89K |
| Ocean Park Foundation | Surrey | $3M |
| Océan - Réadaptation psychosociale | Quebec | $592K |
| Ocean View Cemetery | Sydney | $1,295 |
| Ocean View Christian Assembly | Port Alice | $39K |
| Ocean View Manor Foundation | Eastern Passage | $148K |
| Ocean View Manor Society | Eastern Passage | $20.1M |
| Ocean Wise Conservation Association | Vancouver | $16.7M |
| Oceana Canada | Toronto | $4.5M |
| Oceanland Foundation | Vancouver | — |
| Oceanographic Environmental Research Society | Barrie | $97K |
| Oceans North Conservation Society | Ottawa | $14.3M |
| Oceans Research and Conservation Association - ORCA | Vancouver | $105K |
| Oceanside Building Learning Together Society | Parksville | $616K |
| Oceanside Christian Ministries | Nanaimo | $1.1M |
| Oceanside Classical Concerts Society | Parksville | $87K |
| Oceanside Community Arts Council | Parksville | $888K |
| Oceanside Community Church | Parksville | $778K |
| Oceanside Community Safety Volunteers | Qualicum Beach | $72K |
| Oceanside Congregation of Jehovah's Witnesses Campbell River British Columbia | Campbell River | $88K |
| Oceanside Hospice Society | Qualicum Beach | $890K |
| Oceanside Stroke Recovery Society | Qualicum Beach | $42K |
| Oceanside Volunteer Association | Courtenay | — |
| Oceanview Christian Academy Association | McGray | $493K |
| Oceanview Mandarin Congregation of Jehovah's Witnesses Halifax Nova Scotia | Halifax | $5,605 |
| OCH Foundation for Healthy Communities/Fondation de Lco Pourdes communautés sainess | Nepean | $991K |
| Ochre River United Church | Ochre River | — |
| Ociciwan Contemporary Art Collective Society | Edmonton | $1.2M |
| O'Connell Foundation | Sherwood Park | $100K |
| O'Connor Free Methodist Church | Kakabeka Falls | $103K |
| O'Connor Volunteer Fire Department Auxiliary | Kakabeka Falls | $18K |
| Oconto Campership Fund | Etobicoke | $33K |
| OCWEDID Foundation | Ottawa | $43K |
| Odanah Charitable Trust | Brandon | $580K |
| Odd Fellow and Rebekah Social Services of Sault Ste. Marie | Goulais River | — |
| Odd Fellow and Rebekah Visual Research and Equipment Foundation Corp | Regina | — |
| Odd Fellow & Rebekah Memorial Eye Foundation of Manitoba | Winnipeg | $9,990 |
| Odd Fellow Rebekah Visual Research Foundation of Alberta | Calgary | $26K |
| Odd Fellows and Rebekahs Personal CARE Homes Inc. | Winnipeg | $8.9M |
| Odd Squad Productions Society | Burnaby | $839K |
| O'dell Park Congregation of Jehovah's Witnesses Fredericton New Brunswick | Fredericton | $30K |
| Odessa Charitable Trust | Portage la Prairie | $216K |
| Odessa Free Methodist Church | Odessa | $189K |
| Odette Federer Family Foundation | Toronto | $409K |
| Odihi | New Westminster | $86K |
| Odyssey Showcase | Ottawa | $103K |
| Odyssey Theatre | Ottawa | $377K |
| Oeste Spanish Congregation of Jehovah's Witnesses Edmonton Alberta | Edmonton | $14K |
| Oeuvre Anne-Marie-Audet | Montreal | — |
| Oeuvre Canadienne des Missionnaires de Notre-Dame-De-La-Salette | Montreal | $101K |
| Oeuvre charitable des Chevaliers de Colomb du Québec Inc. | Saint-Hyacinthe | $1.4M |
| Oeuvre Curé-Fafard | Lévis | — |
| Oeuvre de Bienfaisance de Valcourt | Valcourt | — |
| Oeuvre de Charité du diocèse de Rouyn-Noranda | Rouyn-Noranda | — |
| Oeuvre de Jésus Miséricordieux de Montréal Inc. | Lasalle | $62K |
| Oeuvre de la Soupe | La Tuque | $4,843 |
| Oeuvre de Solidarité FDLP | Saint-Jean-Sur-Richelieu | $363K |
| Oeuvre des Missions du Tres-Saint-Sacrement | Québec | $516K |
| Oeuvre des Vocations | Edmundston | $23K |
| Oeuvre des vocations du diocèse de Saint-Jérôme | ST-Jerome | $36K |
| Oeuvre du Grand Seminaire de Quebec | Sillery | $5.7M |
| Oeuvre du Partage de Plessisville | Plessisville | $97K |
| Oeuvre Émilie-Grégoire | Sherbrooke | — |
| Oeuvre et Fabrique de la Paroisse Saint-Denis | Montreal | $321K |
| Oeuvre Eucharistique des Servantes du Très-Saint-Sacrement | Quebec | $5,399 |
| Oeuvre Grignion | Montreal | $795K |
| Oeuvre Immaculata | Sherbrooke | $48K |
| Oeuvre Julia | Sainte-Thérèse | $64K |
| Oeuvre Louis-Estevenon | Québec | — |
| Oeuvre Louise-Elisabeth | Levis | — |
| Oeuvre Marie-Blais | Levis | $1.1M |
| Oeuvre Marie-Dominique-Philippe | Val-David | $50K |
| Oeuvre pontificale de Saint-Pierre-Apôtre | Montreal | $1.9M |
| Oeuvre Rose-Eynac | Lévis | $2.6M |
| Oeuvre Vie Nouvelle | Desbiens | — |
| Oeuvre Vosh Santa Cruz | Saint-Laurent | $278K |
| Oeuvres Caritatives des Filles de Jesus Canada | Trois-Rivieres | $534K |
| Oeuvres de Bienfaisance des Soeurs du Sacre-Coeur d'Ottawa | Ottawa | $10K |
| Oeuvres de Cantave Pierre-Noël (o.c.p.n.) | Montreal | — |
| Oeuvres de la Congregation des Soeurs des Saints Coeurs de Jesus et de Marie de Joliette | Joliette | $14K |
| Oeuvres de la Providence | Montreal | $427K |
| Oeuvres de mère Émilie-Jauron | Saint-Hyacinthe | $4.4M |
| Oeuvres des Franciscains de l'Emmanuel | Montreal | $565K |
| Oeuvres des Soeurs de Saint-Joseph de Saint-Hyacinthe | Saint-Hyacinthe | $25K |
| Oeuvres du Rotary Montréal Ville-Marie | Montréal | — |
| Oeuvres Humanitaires du Salut (o.h.s.) | Montreal | — |
| Oeuvres Josaphat-Vanier | Sherbrooke | — |
| Oeuvres Marie-Anne-Lavallée | Montreal | $3.6M |
| Oeuvres Marie Guyart Inc. | Quebec | $15K |
| Oeuvres-Missions N D B C Inc | Chicoutimi | $37K |
| Oeuvres Regis-Vernet | Saint-Hyacinthe | $11.6M |
| Oeuvres Rivat | Saint-Jean-Sur-Richelieu | — |
| Oeuvres Virginie-Fournier | Saint-Damien | $23K |
| Off Centre Music Series | Toronto | $160K |
| Off Lake Bible Church | Emo | $190K |
| 'Off The Cuff' Community Chorus Inc. | Grand Falls-Windsor | $13K |
| Off The W.A.L. Animal Rescue | Blackfalds | — |
| Off The Wall Stratford Artists Alliance | Stratford | $154K |
| Office de Catechese du Quebec | Laval | $404K |
| Office Diocésain des Vocations (sherbrooke) Inc. | Sherbrooke | $101K |
| Official Board of Preeceville/sturgis United Church | Preeceville | $171K |
| Ogaden Somali Community Association of Ontario | Etobicoke | $230K |
| Ogden Congregation of Jehovah's Witnesses Calgary Alberta | Calgary | — |
| Ogden House Senior Citizens' Club | Calgary | $938K |
| Ogden United Church | Calgary | — |
| Ogema Agricultural Society | Ogema | $25K |
| Ogema Heritage Railway Association Inc. | Ogema | $301K |
| Ogema Regional Park Authority | Ogema | $166K |
| Ogema United Church | Ogema | — |
| Ogilvie Wooden Grain Elevator Society | Stirling | $279 |
| O'Gorman School Foundation Inc. | Timmins | — |
| Ohalei Yoseph Yitzchak | Willowdale | $58K |
| O'Hara Volunteers Association | Madoc | $85K |
| Ohaton Athletic Association | Ohaton | $65K |
| Ohel-Chaim Congregation | Montreal | $743K |
| Ohel Sarah Canada | North York | $41K |
| Ohel Torah Congregation | Montreal | $1.8M |
| Ohel Ya'Akov Community Kollel | Vancouver | $1.5M |
| Oholei Yom Tov Academy | Toronto | $164K |
| Ohr Chaya Charitable Organization | Thornhill | $2.9M |
| Ohr Israel Canada Foundation | Thornhill | $141K |
| Ohr Lamizrach Jewish Educational Centre | North York | $2,627 |
| Ohr Torah | Toronto | — |
| Ohsweken Baptist Church | Caledonia | $59K |
| Oikos-Evangelisation | Sherbrooke | $3,140 |
| Oil Museum of Canada | Wyoming | $742K |
| Oil Springs United Church | Oil Springs | $31K |
| OIS Educational Trust | Nepean | — |
| Ojibway and Cree Cultural Centre | Timmins | $542K |
| Ojibway Historical Preservation Society. | Schomberg | $195K |
| Ojibwe Cultural Foundation | M'Chigeeng | — |
| Ojibwe Roman Catholic Missions - Rainy River | Pinewood | $13K |
| Oka United Church | Oka | $69K |
| Okala Foundation | Brossard | $0 |
| Okalakatiget Society | Labrador | $649K |
| Okanagan Advocacy and Resource Society | Vernon | $110K |
| Okanagan Artists Alternative Association | Kelowna | $147K |
| Okanagan Assembly Centre of Jehovah's Witnesses | Vernon | $25K |
| Okanagan Bible College | Langley | $1,969 |
| Okanagan Boys and Girls Clubs | Kelowna | $18.9M |
| Okanagan Buddhist Cultural Centre | Kelowna | $161K |
| Okanagan Central Christadelphian Ecclesia | Armstrong | $112K |
| Okanagan Central Small Dog Rescue Society | Kelowna | $12K |
| Okanagan Centre for Spiritual Living Society | Vernon | $17K |
| Okanagan Chinese Baptist Church | Kelowna | $131K |
| Okanagan Choral Society | Kelowna | — |
| Okanagan Christian Church | Abbotsford | — |
| Okanagan Christian School | Kelowna | $2.1M |
| Okanagan College | Kelowna | $147.9M |
| Okanagan College Alumni Association | Kelowna | $29K |
| Okanagan College Foundation | Kelowna | $4.9M |
| Okanagan Commemorative Pioneer Cultural Society | Vernon | $1.1M |
| Okanagan Congregation of Jehovah's Witnesses Vernon British Columbia | Vernon | $85K |
| Okanagan Falls Community Church (baptist) | Okanagan Falls | $127K |
| Okanagan Falls Helping Hand | Okanagan Falls | $23K |
| Okanagan Falls' Heritage and Museum Society | Okanagan Falls | $43K |
| Okanagan Falls Senior Activities Society | Okanagan Falls | $0 |
| Okanagan Falls United Church | Okanagan Falls | $41K |
| Okanagan Falls Volunteer Fire Department | Okanagan Falls | — |
| Okanagan Fruit Tree Project Society | Kelowna | $376K |
| Okanagan Gleaners | Oliver | $542K |
| Okanagan Global Gateway Foundation | Oliver | $74K |
| Okanagan Halfway House Society | Kelowna | $2M |
| Okanagan Hindu Cultural Society | Summerland | $63K |
| Okanagan Hispanic Baptist Church | Kelowna | — |
| Okanagan Historical Society | Vernon | $16K |
| Okanagan Hockey Community Foundation | Penticton | $85K |
| Okanagan Humane Society | Kelowna | $1.2M |
| Okanagan Japanese United Church | Kelowna | $9,167 |
| Okanagan Jazz and Blues Society | Kelowna | $4 |
| Okanagan Jewish Community Association | Kelowna | $143K |
| Okanagan Kids CARE Fund Society | Kelowna | — |
| Okanagan Lake Tagalog Congregation of Jehovah's Witnesses Kelowna British Columbia | Kelowna | $22K |
| Okanagan Landing & District Community Association | Vernon | $126K |
| Okanagan Learning Foundation | Vernon | $280K |
| Okanagan Lifetime Networks Association | Kelowna | $39K |
| Okanagan Mental Health Services Society | Kelowna | $3.1M |
| Okanagan Metis & Aboriginal Housing Society | Kelowna | $2.2M |
| Okanagan Military Museum Society | Kelowna | $8,446 |
| Okanagan Military Tattoo Society | Vernon | $291K |
| Okanagan Mission Community Hall Association | Kelowna | $364K |
| Okanagan Mission Senior Centre | Kelowna | $20K |
| Okanagan Montessori Elementary School Society | Kelowna | $1.6M |
| Okanagan Nation Family Intervention and Services Society | Penticton | $1.3M |
| Okanagan Quality Life Society (QLS) | Vernon | $18K |
| Okanagan Regional Library District | Kelowna | $22.9M |
| Okanagan Similkameen Conservation Alliance | Penticton | $149K |
| Okanagan-Similkameen Neurological Society | Penticton | $3.9M |
| Okanagan Similkameen Parks Society | Summerland | $5,670 |
| Okanagan Similkameen Stewardship Society | Penticton | $389K |
| Okanagan Summer Festival Society | Kelowna | $39K |
| Okanagan Symphony Society | Kelowna | $1.2M |
| Okanagan Valley Baptist Church | Vernon | $211K |
| Okanagan Valley Music Festival Society of Penticton | Penticton | $67K |
| Okanagan Valley Pregnancy CARE Centre | Kelowna | $643K |
| Okanagan Village Housing Society | Vernon | $2.3M |
| Okanagan Xeriscape Association | Kelowna | $84K |
| Okanagan Youth for Christ Society | Langley | — |
| Okanagan Zambia Health Initiative Society | Kelowna | — |
| OKBA Islamic Community Centre | Scarborough | $53K |