| Walking Mobility Clinics, Barrie, Cliniques de mobilité à pied | Barrie |
| Walmart Pharmacy, Alliston, Pharmacie Walmart | Alliston |
| Walmart Pharmacy, Midland, Pharmacie Walmart | Midland |
| Walton Counselling Services, Services de counselling Walton | Collingwood |
| Walton Little School | Huron Est |
| Wasaga Beach Cancer Support Group, Groupe de soutien pour personnes atteintes du cancer Wasaga Beach | Wasaga Beach |
| Wasaga Beach Cooperative Nursery School | Wasaga Beach |
| Wasaga Beach Fire Department | Wasaga Beach |
| Wasaga Beach Lions Club, Wasaga Beach RecPlex | Wasaga Beach |
| Wasaga Beach Ministerial Food Bank, Banque alimentaire | Wasaga Beach |
| Wasaga Beach Women's Business Association, No Physical Address, Association des femmes d'affaires de Wasaga Beach | Wasaga Beach |
| Wasaga Beach. Municipal Office, Aucune adresse physique, Stations de repos pour les victimes de conditions météorologiques extrêmes | Wasaga Beach |
| Wasaga Beach. Municipal Office, Wasaga Beach, Centre de vie active pour les aînés | Wasaga Beach |
| Wasaga Beach. Municipal Office, Wasaga Beach, Wasaga Beach Youth Centre | Wasaga Beach |
| Wasaga Beach. Municipal Office, Services de transport en commun de Wasaga Beach | Wasaga Beach |
| Wasaga Beach. Municipal Office, Wasaga Beach. Bureau municipal | Wasaga Beach |
| Wasaga Business & Tourism Association, Non Adresse physique | Wasaga Beach |
| Wasaga Community Church, Église communautaire de Wasaga | Wasaga Beach |
| Wasaga Taxi | Wasaga Beach |
| We are the Villagers, Midland, We are the Villagers (Nous sommes les villageois), Midland - Adresse postale | Midland |
| We Are Warriors! - Canadian MS Collective, Online / Web Service, We Are Warriors! - Collectif canadien sur la sclérose en plaques | |
| Wee Watch Enriched Home Child Care, Barrie, Service de garderie à domicile enrichie Wee Watch Enriched Home Child Care | Barrie |
| Wee Watch-Quality Licensed Home Child Care, Garde d'enfants Orillia | Orillia |
| Wellington Walk-in Clinic, Clinique sans rendez-vous Wellington | Barrie |
| Wellwise by Shoppers Drug Mart, Barrie | Barrie |
| Wendat Community Programs, Lorna Tomlinson Residence for Seniors, Résidence pour seniors Lorna Tomlinson gérée par Wendat | Penetanguishene |
| Wendat Community Programs, Lorna Tomlinson Residence for Seniors, Services pour aînés - Programme de repas communautaires | Penetanguishene |
| Wendat Community Programs, Lorna Tomlinson Residence for Seniors, Services psychogériatriques | Penetanguishene |
| Wendat Community Programs, MIdland, Club social Wendat | Midland |
| Wendat Community Programs, MIdland, Programme de jour pour aînés | Midland |
| Wendat Community Programs, MIdland, Programme de soutien à l'emploi Wendat | Midland |
| Wendat Community Programs, MIdland, Services de crise | Midland |
| West Grey Police Service | Grey Ouest |
| West Parry Sound Health Centre, Diabetes Education Centre of Parry Sound and Area, Parry Sound - Albert St | Parry Sound |
| West Parry Sound Health Centre, Parry Sound - rue Bowes, Service d'ambulance de Parry Sound | Parry Sound |
| West Ridge Early Education Centre | Orillia |
| Westminster Presbyterian Church, Barrie, Église presbytérienne Westminster | Barrie |
| Westminster Presbyterian Church, Barrie, Église presbytérienne Westminster | Barrie |
| Westminster Presbyterian Church, Groupe de jeu parents et tout-petits Westminster | Barrie |
| Whitestone Public Library & Technology Centre | Whitestone |
| Wig Boutique Barrie, Boutique des Perruques Barrie | Barrie |
| Willis Presbyterian Church. Orillia, église presbytérienne Willis. Orillia | Oro-Medonte |
| Women and Children's Shelter of Barrie, Outreach Services | Barrie |
| Women and Children's Shelter of Barrie, Refuge pour femmes et enfants de Barrie | Barrie |
| Women's Centre (Grey and Bruce), Programme des agents de soutien aux tribunaux de la famille, Women's Centre Grey & Bruce | Owen Sound |
| Women's Centre (Grey and Bruce), Women's Centre Grey & Bruce | Owen Sound |
| Women's House, Serving Bruce and Grey, Adresse postale | Kincardine |
| Workers Health and Safety Legal Clinic, Toronto Workers Health and Safety Legal Clinic | Toronto |
| Wow Living, Out of the Cold Cafe | Bradford West Gwillimbury |
| Wray's Guardian Pharmacy, pharmacie Wray's Guardian | Alliston |
| Wye Marsh Wildlife Centre, Children's Day Camps | Midland |
| Wye Marsh Wildlife Centre | Midland |