| P4P Planning Network, P4P | Toronto |
| Palms Medical Centre, Cabinet de médecine familiale et clinique sans rendez-vous | Oakville |
| Parachute | Toronto |
| Pardons Canada, Ligne de soutien et d'information | Toronto |
| Parent Finders Ottawa, Service en ligne, Services de retrouvailles après l'adoption | Ottawa |
| Parkinson Canada | North York |
| Parler pour changer | Ontario |
| Parlons Maintenant | Ontario |
| Paroisse Saint-Philippe, Services religieux en français | Burlington |
| Peak Sleep, Oakville, Étude du sommeil et consultation | Oakville |
| Pediatric Oncology Group of Ontario | Toronto Centre-ville |
| Pediatric Urgent Care, Clinique médicale sans rendez-vous | Oakville |
| Period Pin | Ontario |
| PerLE, Information sur les licences | Ottawa |
| PharmaChoice, Georgetown - 99 Avenue Sinclair (Professional Arts Pharmacy), Services Pharmaceutiques | Halton Hills |
| PharmaChoice, Oakville (Palermo Pharmacy), Services pharmaceutiques | Oakville |
| PharmaChoice, Milton - Rue Bronte Sud (Main and Bronte Pharmacy), Services pharmaceutiques | Milton |
| PharmaChoice - Acton (Acton-Halton Pharmacy), Services pharmaceutiques | Halton Hills |
| Pharmasave, Georgetown (MedTrust Pharmacy), Services pharmaceutiques | Halton Hills |
| Pharmasave, Milton, Holly Ave (Holly Pharmacy), Services pharmaceutiques | Milton |
| Pharmasave, Oakville - Chemin Upper Middle Ouest (Fairways Pharmasave), Services Pharmaceutiques | Oakville |
| Pharmasave, Oakville, Dundas St W (Dundas Neyagawa), Services pharmaceutiques | Oakville |
| Pharmasave, Milton, Main St W (Tremaine Pharmacy), Services Pharmaceutiques | Milton |
| Pharmasave, Oakville, Speers Rd (Speers Pharmacy), Services Pharmaceutiques | Oakville |
| Pharmasave, Acton, Services pharmaceutiques | Acton |
| Pharmasave, Milton, Martin St (LiveYoung Pharmacy), Services pharmaceutiques | Milton |
| PharmaSense, Oakville - Boulevard Westoak Trails, Services pharmaceutiques | Oakville |
| Pharmex Direct, Services Pharmaceutiques | Oakville |
| Plan International Canada | Toronto |
| Police provinciale de l'Ontario [région de Toronto-Peel], Division de la sécurité routière, Détachement de Port Credit | Mississauga |
| Portail canadien en soins palliatifs | Winnipeg |
| Postes Canada, Adresse postale, Lettres au père Noël | |
| Postmaster Medical Clinic, Cabinet de médecine familiale et clinique sans rendez-vous | Oakville |
| Preschool Petit Bateau Milton, Centre prescolaire et programme parascolaire | Milton |
| Prime Care After Hours Walk-in Clinic | Milton |
| Prime Care Family Health Team | Milton |
| Prime Care Family Health Team, Milton - 470 rue Bronte Sud, bureau 200, Santé familiale et communautaire | Milton |
| Prime Care Family Health Team, Milton - 470 rue Bronte Sud, bureau 206, Santé familiale et communautaire | Milton |
| Prime Care Family Health Team, Milton - 6990 chemin Derry, bureau 201, Santé familiale et communautaire | Milton |
| Prime Care Family Health Team, Milton - 6990 Rue Derry, bureau 102, Santé familiale et communautaire | Milton |
| Prime Care Family Health Team, Milton - Rue Commercial, Santé familiale et communautaire | Milton |
| PrinceRx Kingsridge Pharmacy, Services Pharmaceutiques | Oakville |
| PROBUS Canada, Clubs sociaux | Ottawa |
| Progress Place, «Warm Line» et soutien en matière de santé mentale | Toronto |
| Prospérité Canada, Autonomisation financière | Toronto |
