| Organization Name(s) | Located In |
| Waterloo Catholic District School Board | Kitchener |
| Waterloo Catholic District School Board, St Louis Adult Learning and Continuing Education Centres | Kitchener |
| Waterloo Catholic District School Board, St Louis Adult Learning and Continuing Education Centres | Cambridge |
| Waterloo Catholic District School Board, St Louis Adult Learning and Continuing Education Centres, Core Essentials | Cambridge |
| Waterloo Catholic District School Board, St Louis Adult Learning and Continuing Education Centres, Core Essentials | Kitchener |
| Waterloo Fetal Alcohol Syndrome Support Group | Waterloo |
| Waterloo Region Anaphylaxis Support and Education | Waterloo Region |
| Waterloo Region Community Legal Services | Kitchener |
| Waterloo Region District School Board | Kitchener |
| Waterloo Region District School Board, Special Education Services | Kitchener |
| Waterloo Region Family Network | Waterloo |
| Waterloo Region Nordic Sports Club | Waterloo |
| Waterloo Region. Region of Waterloo Public Health, Child and Family Health | Waterloo |
| Waterloo Region. Region of Waterloo Public Health, Child and Family Health | Cambridge |
| Waterloo Region. Social Services Department, Children's Services, Cambridge Children's Centre | Cambridge |
| Waterloo Region. Social Services Department, Children's Services, Child Care Subsidy | Waterloo |
| Waterloo Region. Social Services Department, Children's Services, Christopher Children's Centre | Cambridge |
| Waterloo Region. Social Services Department, Children's Services, Edith MacIntosh Children's Centre | Kitchener |
| Waterloo Region. Social Services Department, Children's Services, Elmira Children's Centre | Woolwich |
| Waterloo Region. Social Services Department, Children's Services, Infant and Child Development Program | Waterloo |
| Waterloo Region. Social Services Department, Children's Services, Kinsmen Children's Centre | Cambridge |
| Waterloo Region. Social Services Department, Employment and Income Support, Ontario Works | Waterloo |
| Waterloo Region. Social Services Department, Social Planning, Policy and Program Administration, Community Outreach Program | Waterloo Region |
| Waterloo Region. Transportation and Environmental Services, Grand River Transit, MobilityPLUS | Kitchener |
| Waterloo Regional Down Syndrome Society (The) | Waterloo Region |
| Waterloo Regional Homes for Mental Health | Kitchener |
| Waterloo Wellington Community Care Access Centre | Waterloo |
| Waterloo Wellington Myalgic Encephalomyelitis Association | Waterloo |
| Waterloo. Community, Culture, and Recreation Services | Waterloo |
| Waterloo. Community, Culture, and Recreation Services, Home Support Services | Waterloo |
| Waterloo. Community, Culture, and Recreation Services, Waterloo Memorial Recreation Complex, Adapted Aquatics | Waterloo |
| Waterloo-Wellington VOICE for Hearing Impaired Children | Toronto |
| Wilfrid Laurier University, Accessible Learning Centre | Waterloo |
| Wilmot Family Resource Centre | Wilmot |
| Woolwich Community Health Centre | Woolwich |
| Woolwich Community Health Centre, Wellesley Township Community Health Centre | Wellesley |
| Woolwich Counselling Centre | Woolwich |
| Woolwich Sledge Hockey | Woolwich |
| Workshop Solutions | Waterloo Region |
