| Ottawa Rotary Home Foundation | Ottawa | $94K |
| Ottawa Safe Communities Network | Kanata | — |
| Ottawa Safety Council | Nepean | $10.7M |
| Ottawa Salus Corporation | Ottawa | $14M |
| Ottawa School of Art Ecole d'Art d'Ottawa | Ottawa | $2.3M |
| Ottawa Shiv Shakti Hindu Community (OSSHC) | Kanata | — |
| Ottawa Sids Society | Ottawa | — |
| Ottawa Sikh Society | Nepean | $1.6M |
| Ottawa Singers | Ottawa | — |
| Ottawa Skateboard Association | Ottawa | $4,220 |
| Ottawa Spiritual Pathways Centre | Ottawa | — |
| Ottawa Stray Cat Rescue | Ottawa | $698K |
| Ottawa Suzuki Strings | Nepean | $121K |
| Ottawa Symphony Orchestra-L'orchestre Symphonique d'Ottawa | Nepean | $299K |
| Ottawa Talmud Torah Afternoon School | Ottawa | $139K |
| Ottawa Tamil Seniors Association | Gloucester | $51K |
| Ottawa Theological Hall Inc. | Ottawa | $11K |
| Ottawa Therapy Dogs | Nepean | $115K |
| Ottawa Theravada Buddhist and Cultural Center Inc. | Orleans | — |
| Ottawa Titans Field of Dreams Foundation | Ottawa | $58K |
| Ottawa Torah Centre | Nepean | $1.5M |
| Ottawa Torah Institute | Ottawa | — |
| Ottawa Valley Aid for Chernobyl Children | North Gower | $260 |
| Ottawa Valley Ambassadors Hockey Club | Nepean | — |
| Ottawa Valley Association of the Fellowship of Evangelical Baptist Churches of Canada | Pembroke | $4,050 |
| Ottawa Valley Community Church | Carleton Place | $344K |
| Ottawa Valley Community Foundation | Pembroke | $988K |
| Ottawa Valley Country Music Hall of Fame | Pakenham | $24K |
| Ottawa Valley Deaf Church | Ottawa | $6,130 |
| Ottawa Valley Grace Ministry | Barrys Bay | — |
| Ottawa Valley Islamic Centre Inc. | Deep River | $301K |
| Ottawa Valley Pentecostal Camp | Cobourg | $928K |
| Ottawa Valley Search and Rescue Dog Association | Ottawa | $30K |
| Ottawa Valley Wild Bird CARE Centre | Nepean | $911K |
| Ottawa Victim Services Inc./Services aux Victimes D'Ottawa Inc. | Ottawa | $677K |
| Ottawa Vietnamese Alliance Church of the Christian and Missionary Alliance in Canada | Ottawa | $121K |
| Ottawa Volunteer Search and Rescue | Ottawa | $71K |
| Ottawa Waldorf School | Stittsville | — |
| Ottawa Welsh Choral Society | Ottawa | — |
| Ottawa West Community Support Service Communautaire d'Ottawa-Ouest | Ottawa | $9M |
| Ottawa West End Community Chaplaincy | Kanata | — |
| Ottawa West Junior Music Club | Ottawa | $300 |
| Ottawa Youth Orchestra Academy | Ottawa | $485K |
| Otter Lake Conservative Mennonnite Church | Seguin | $325K |
| Otter Valley Conservative Mennonite Church | Aylmer | $146K |
| Otterville Baptist Church | Otterville | $55K |
| Otterville United Church | Otterville | $90K |
| Ottewell Congregation of Jehovah's Witnesses | Edmonton | $78K |
| Ottewell Iloko Congregation of Jehovah's Witnesses Edmonton Alberta | Edmonton | $11K |
| Ottewell United Church | Edmonton | $124K |
| Otto and Marie Pick Foundation | Lindsay | $12.6M |
| Ouano Foundation | Vancouver | $334K |
| Ouellette French Congregation of Jehovah's Witnesses Windsor Ontario | Windsor | $8,855 |
| Ouest de Montreal/greek Orthodox Community of the Region of South-West of Montreal | Lasalle | $272K |
| Our Advocate With God | London | — |
| Our Best Brain Inc. | Unionville | — |
| Our Bread of Life Prophetic Ministry Inc. | Hamilton | $6,692 |
| Our Children Our Future | Sudbury | $11.8M |
| Our Children's Medicine | Toronto | $385K |
| Our Christ Is Wonderful Missions & Ministries International Inc | Brampton | $84K |
| Our Christ Is Wonderful Missions & Ministries International Inc. - East Sector | Scarborough | — |
| Our Christ is Wonderful Missions & Ministries International Inc. - West Sector | Brampton | $65K |
| Our Community Health Initiative Cooperative | Sooke | $81K |
| Our Daily Bread Ministries Canada | Windsor | $6.5M |
| Our Daily Bread Soup Kitchen Inc. | Selkirk | $141K |
| Our Father's House Christian Outreach Centre | Courtice | — |
| Our God Hears - Kitchener-Waterloo Foursquare Gospel Church | Kitchener | $162K |
| Our Harbour | Saint-Lambert | — |
| Our Health Centre Association | Chester | $614K |
| Our Health Centre Foundation | Chester | $679K |
| Our House (edmonton) LTD | Edmonton | $2.1M |
| Our House Six Steps Drug Recovery Corporation | Esterhazy | $17K |
| Our Independence Project | Richmond Hill | — |
| Our Kenyan Kids / Nos gamins Kenyans | Brockville | $62K |
| Our Kids Celebrity Classic | Belleville | — |
| Our Kids Child CARE Lambton Inc. | Sarnia | $968K |
| Our Kids Count of Thunder Bay Inc | Thunder Bay | $2.2M |
| Our Lady Help of Christians Parish | Toronto | $157K |
| Our Lady of Atonement Parish | ST Paul | $21K |
| Our Lady of Combermere Charitable Organization | Combermere | $1.2M |
| Our Lady of Czestochowa Parish | Montreal | $215K |
| Our Lady of Fatima Catholic Church | Calgary | $398K |
| Our Lady of Fatima Catholic School Council | Ottawa | $39K |
| Our Lady of Fatima Church | Dryden | $24K |
| Our Lady of Fatima Council No 3732 Charitable Welfare Trust | Port Colborne | $2,560 |
| Our Lady of Fatima Parish | Brampton | $745K |
| Our Lady of Fatima Parish | Scarborough | $745K |
| Our Lady of Fatima Parish | Victoria | $284K |
| Our Lady of Good Counsel | ST Paul | $8,151 |
| Our Lady of Good Counsel Parish High Level Alberta | High Level | $89K |
| Our Lady of Good Counsel Parish | Saint John | $1.1M |
| Our Lady of Good Counsel Parish | Toronto | $257K |
| Our Lady of Good Counsel Roman Catholic Parish | Pinewood | $81K |
| Our Lady of Good Health Parish | Scarborough | $269K |
| Our Lady of Good Help Parish | Edmonton | $211K |
| Our Lady of Grace Church | Sedley | $85K |
| Our Lady of Grace Monastery Foundation | Monastery | $101K |
| Our Lady of Grace Parish | Angus | $177K |
| Our Lady of Grace Parish | Aurora | $1.4M |
| Our Lady of Grace Parish | Salt Spring Island | $152K |
| Our Lady of Guadalupe Non-Profit Home of Windsor Inc. | Windsor | $279K |
| Our Lady of Guadalupe Parish | Dartmouth | $1.2M |
| Our Lady of Guadalupe Parish | Toronto | $456K |
| Our Lady of Guadalupe Tonantzin Community Society | Vancouver | — |
| Our Lady of His Mercy Friendship House Apostolate | Ottawa | $27K |
| Our Lady of Hope Roman Catholic Parish | Anola | $56K |
| Our Lady of Kibeho Orphanage Foundation | Edmonton | $85K |
| Our Lady of la Salette Church | Forget | $45K |
| Our Lady of La Vang Vietnamese Community | Mississauga | $1.5M |
| Our Lady of Lebanon Church | Toronto | $605K |
| Our Lady of Loretto Chapel | Edmonton | — |
| Our Lady of Lourdes | Govan | $1,513 |
| Our Lady of Lourdes Church | Cardiff | $149K |
| Our Lady of Lourdes Church | Winnipeg | $109K |
| Our Lady of Lourdes Parish and Mission | Nakusp | $37K |
| Our Lady of Lourdes Parish | Miramichi | $371K |
| Our Lady of Lourdes Parish | Toronto | $1.5M |
| Our Lady of Lourdes Shrine Inc. | Duck Lake | $110K |
| Our Lady of Mercy Church | Honey Harbour | $117K |
| Our Lady of Mercy Church | Port Hope | $282K |
| Our Lady of Mercy Museum Committee | Aguathuna | $95K |
| Our Lady of Mercy Parish | Sarnia | $547K |
| Our Lady of Mercy Parish | ST Paul | $2,254 |
| Our Lady of Mount Carmel | Hastings | $263K |
| Our Lady of Mount Carmel Parish | Toronto | $440K |
| Our Lady of Mount Carmel Waugh | ST Paul | $2,460 |
| Our Lady of P.e.i. Inc. | ST. Louis | $23K |
| Our Lady of Peace Chapel | Astra | $25K |
| Our Lady of Peace Parish | Calgary | $116K |
| Our Lady of Peace Parish | Etobicoke | $807K |
| Our Lady of Peace Parish | Fredericton | $670K |
| Our Lady of Peace Parish | Peace River | $220K |
| Our Lady of Peace Parish | Regina | $324K |
| Our Lady of Perpetual Help | Saskatoon | — |
| Our Lady of Perpetual Help Church | Calgary | $557K |
| Our Lady of Perpetual Help Church | Coronach | $28K |
| Our Lady of Perpetual Help Church | Winnipeg | $620K |
| Our Lady of Perpetual Help Parish | Toronto | $858K |
| Our Lady of Perpetual Help Parish | Wishart | $27K |
| Our Lady of Seven Sorrows Church | Camperville | $83K |
| Our Lady of Seven Sorrows Church | Lampman | $95K |
| Our Lady of Smolensk Russian Orthodox Church | Jacksons Point | $258K |
| Our Lady of Smolensk Russian Orthodox Retirement Centre | Jacksons Point | $538K |
| Our Lady of Sorrows | Fort Quappelle | $115K |
| Our Lady of Sorrows Catholic School Council (CSC) | Etobicoke | $139K |
| Our Lady of Sorrows Parish | Etobicoke | $2.1M |
| Our Lady of the Airways Parish | Mississauga | $517K |
| Our Lady of the Angels Roman Catholic Church | Amaranth | $86K |
| Our Lady of the Annunciation Child CARE Centre | Richmond Hill | $1.1M |
| Our Lady of the Annunciation Parish | Richmond Hill | $705K |
| Our Lady of the Assumption Church | Carberry | — |
| Our Lady of the Assumption Church | Otonabee | $183K |
| Our Lady of the Assumption Parish | Toronto | $1.1M |
| Our Lady of the Assumption Roman Catholic Parish Inc. | Stratford | $504K |
| Our Lady of the Atonement Parish | Windsor | $581K |
| Our Lady of the Highways Church | Sault Ste Maire | $81K |
| Our Lady of the Lake Church | Gimli | $26K |
| Our Lady of the Lake Council No. 4917 Charitable Welfare Trust | Grimsby | $40K |
| Our Lady of the Miraculous Medal Parish | Toronto | $710K |
| Our Lady of the Nativity Parish | McCreary | $33K |
| Our Lady of the Pillar Academy | Adelaide-Metcalfe | $503K |
| Our Lady of the Prairies Foundation | Saskatoon | $559K |
| Our Lady of the Prairies Parish | Regina | — |
| Our Lady of the Rivers Parish | Red Bank Reserve | $255K |
| Our Lady of the Rockies Roman Catholic Parish | Canmore | $864K |
| Our Lady of the Rosary Church | Langford | $1.3M |
| Our Lady of the Rosary Hospital Foundation | Castor | $52K |
| Our Lady of the Rosary Parish | Scarborough | $314K |
| Our Lady of the Snows Roman Catholic Missions of Berens River | WPG | $278K |
| Our Lady of the Way Catholic Church | Whitehorse | $38K |
| Our Lady of the Way Parish Notre Dame du Chemin | Pinewood | $53K |
| Our Lady of the Whiteshell Chapel | Winnipeg | $5,492 |
| Our Lady of Victory | London | $247K |
| Our Lady of Victory Catholic Church Thorsby Alberta | Devon | $78K |
| Our Lady of Victory Memorial Parish | Winnipeg | $510K |
| Our Lady of Victory Parish | Toronto | $171K |
| Our Lady of Victory Parish Buckingham | Gatineau | $78K |
| Our Lady of Victory School Inc. | Winnipeg | $1.7M |
| Our Lady of Vietnam | Hamilton | $357K |
| Our Lady Queen of Croatia Parish | Toronto | $527K |
| Our Lady Queen of Families Parish | ST. John's | $653K |
| Our Lady Queen of Peace Church | Calgary | — |
| Our Lady Queen of Peace Foundation (canada) Inc. | Calgary | $2 |
| Our Lady Queen of Peace Parish | Fenelon Falls | $101K |
| Our Lady Queen of Peace Ranch (northern Alberta) LTD. | Scottsdale | $60K |
| Our Lady Queen of Peace Ranch (southern Alberta) LTD. | Scottsdale | $282K |
| Our Lady Queen of Poland Parish | Toronto | $585K |
| Our Lady Queen of the World Parish | Richmond Hill | $964K |
| Our Lady Seat of Wisdom Academy for Studies in Christian Culture | Barry's Bay | $3M |
| Our Lady Star of the Sea Parish | ST. John's | $35K |
| Our Lady's Missionaries | Scarborough | $1.7M |
| Our Little Charity Canada | Quesnel | $9,346 |
| Our Living Hope Community Church | Brampton | $73K |
| Our Nation Student Housing | Calgary | $19K |
| Our Neighbourhood Living Society | Bedford | $5.8M |
| Our Own Health Centre Inc. | Winnipeg | $283K |
| Our Own Home | Oakville | $0 |
| Our Parents' Home | Edmonton | — |
| Our Place/Chez Nous Activity Centre Inc. | Moncton | $66K |
| Our Place/chez Nous Drop in Center Inc. | Winnipeg | $16K |