| Wai Nui O Kanaka Outrigger Canoe Club | Oakville |
| Walk with a Doc, Oakville | Oakville |
| Walkers Medical Centre, Walk-in Medical Clinic | Burlington |
| Walkers Medical Pharmacy, Pharmacy Services | Burlington |
| Walk-In Medical Clinics, Burlington | Burlington |
| Walk-In Medical Clinics, Halton Hills | Halton Hills |
| Walk-In Medical Clinics, Milton | Milton |
| Walk-In Medical Clinics, Oakville | Oakville |
| Wallace Park Tennis Club | Oakville |
| Walmart Pharmacy, Burlington - Dundas St W, Pharmacy Services | Burlington |
| Walmart Pharmacy, Burlington - Fairview St, Pharmacy Services | Burlington |
| Walmart Pharmacy, Georgetown - Guelph St, Pharmacy Services | Halton Hills |
| Walmart Pharmacy, Milton - Steeles Ave E, Pharmacy Services | Milton |
| Walmart Pharmacy, Oakville - Hays Blvd, Pharmacy Services | Oakville |
| Walton Memorial United Church | Oakville |
| Waterdown Manor, Retirement Residence | Waterdown |
| WELL Health Diagnostic Centres, Cardiology and Diagnostic Imaging | Milton |
| WELL Health Medical Centre, Family Practice and Walk-in Clinic | Oakville |
| Wellbeings Medical Centre for Innovation & Excellence | Burlington |
| Wellbrook Place East, Long Term Care Centre | Erin Mills |
| Wellbrook Place West, Long Term Care Centre | Mississauga |
| Wellington County Library, Rockwood Branch | Guelph-Eramosa |
| Wellington Park Care Centre, Long Term Care Home | Burlington |
| Wellington Square United Church | Burlington |
| Wellington Square United Church, Friday Community Hub and Lunch | Burlington |
| Wellmedica Oakville Town Centre Pharmacy, Pharmacy Services | Oakville |
| Wellness Wave Pharmacy, Oakville, Pharmacy Services | Oakville |
| Wellspring Birmingham Gilgan House, Community-Based Cancer Support | Oakville |
| Wellspring Cancer Support, Online Cancer Support Programs | Toronto |
| Wellspring Church | Burlington |
| Wellwise Home Health and Wellness, Burlington, Home Health Care Products | Burlington |
| Wellwise Home Health and Wellness, Oakville, Home Health Care Products | Oakville |
| Wentworth-Halton X-ray and Ultrasound, Burlington - Brant St, Diagnostic Imaging | Burlington |
| Wentworth-Halton X-ray and Ultrasound, Burlington - Appleby Line, Diagnostic Imaging | Burlington |
| Wentworth-Halton X-ray and Ultrasound, Burlington - Fairview St, Diagnostic Imaging | Burlington |
| Wentworth-Halton X-ray and Ultrasound, Burlington - Walker's Line, Diagnostic Imaging | Burlington |
| Wentworth-Halton X-Ray and Ultrasound, Oakville - Speers Rd, Diagnostic Imaging | Oakville |
| Wentworth-Halton X-Ray and Ultrasound, Oakville - Old Bronte Rd, Diagnostic Imaging | Oakville |
| Wesley, Housing Services – Halton | Halton Region |
| Wesley, Hoarding Support Services – Halton | Halton Region |
| West End Studio Theatre | Oakville |
| West Plains Medical and Pharmacy, Pharmacy Services | Burlington |
| West Plains Medical and Pharmacy, Walk-in Medical Clinic | Burlington |
| West Plains United Church | Burlington |
| Wheelchair In Motion | Selkirk |
| White Oaks Pharmacy, Pharmacy Services | Oakville |
| Widowed Friends | Halton Region |
| Williams Mill Creative Arts Studios, Glen Williams | Halton Hills |
| Wings of Change - Peer Support, Peer Support for First Responders | Canada |
| Winston Park Medical Centre, Walk-in Medical Clinic | Oakville |
| Women's Centre of Halton (The), Women's Support Services | Oakville |
| Women's Centre of Halton (The), Legal Clinic and Advocacy | Oakville |
| Women's Centre of Halton (The), One-on-One Support Services | Oakville |
| Women's Centre of Halton (The), Support Groups and Workshops | Oakville |
| Women's College Hospital, Crossroads Refugee Health Clinic | Toronto |
| Women's College Hospital, Sexual Assault / Domestic Violence Care Centre | Toronto |
| Women's College Hospital, Substance Use Service | Toronto |
| Womens Recreational Volleyball, Milton - Mailing Address | Milton |
| Woodview Medical Clinic, Walk-in Medical Clinic | Burlington |
| Woodview Pharmacy, Pharmacy Services | Burlington |
| World Probus, Find Location, Probus Canada | Ottawa |
| Wounded Warriors Canada, Whitby Office | Whitby |
| Wyecroft Pharmacy, Pharmacy Services | Oakville |
| Wyndham Manor | Oakville |
