| Asperger's Society of Ontario | Toronto Downtown North |
| Association of Administrative Professionals, Barrie / Simcoe County Branch | Barrie |
| Barrie and Area Ontario Health Team, Barrie - no physical address | Barrie |
| Barrie and District Association of Realtors | Barrie |
| Barrie Region Innovation Xchange, No Physical Address | Barrie |
| Beeton and District Agricultural Society, Beeton & District Agricultural Society, Beeton Fall Fair | New Tecumseth |
| Business and Professional Women (BPW) Barrie | Barrie |
| Clearview Ministerial Association, No Physical Address | Clearview (Simcoe County) |
| College of Dental Technologists of Ontario | Scarborough |
| College of Physicians and Surgeons of Ontario | Toronto Downtown Central |
| College of Psychologists of Ontario (The) | Toronto Downtown North |
| Cookstown Agricultural Society | Innisfil |
| Easter Seals Ontario, Barrie-Simcoe County Office | Barrie |
| Essa and District Agricultural Society, Essa Agriplex | Essa |
| Human Resources Professionals Association, Barrie and District Chapter | Barrie |
| Huronia Korean Business Association | Barrie |
| Insurance Bureau of Canada, Ontario Head Office, Consumer Information Centre | Toronto |
| North Simcoe Muskoka Hospice Palliative Care Network, Orillia, Education and consultation | Orillia |
| Ontario College of Trades | Toronto Downtown |
| Ontario Dental Association | Toronto Downtown North |
| Ontario English Catholic Teachers Association. Simcoe Muskoka Unit | Barrie |
| Ontario Registered Music Teachers Association, No Physical Address | Barrie |
| Ontario Secondary School Teachers' Federation, Barrie, Simcoe County District 17 | Barrie |
| SEIU Healthcare | Barrie |
| Simcoe County Federation of Agriculture, Simcoe County Administration Building | Springwater |
| Simcoe County Home Builders' Association | Barrie |
| Simcoe County Young Professionals Association | Barrie |
| South Simcoe Arts Council | New Tecumseth |
| Tourism Simcoe County, No Physical Address, Simcoe County Farm Fresh | Simcoe |