| Business | Phone |
| Georgian Bay Store 39 Pine Valley Rd, Port Severn L0K 1S0 | (705) 538-4229 |
| Jim Earle Marine Sales 2754 Marine Dr, Port Severn L0K 1S0 | (705) 538-1515 |
| Narrows Marina Po Box 69, Port Severn L0K 1S0 | (705) 538-1203 |
| O'Hara Park Rr 1, Port Severn L0K 1S0 | (705) 756-2284 |
| Severn Boat Haven 2658 Kelly's Rd, Port Severn L0K 1S0 | (705) 538-2975 |
| Six Mile Lake Marina Six Mile Lake, Port Severn L0K 1S0 | (705) 756-2228 |
| South Bay Cove Marina 375 South Bay Rd, Port Severn L0K 1S0 | (705) 756-3333 |
| Whites Falls Marina & Constr 134 Old Mill Rd, Port Severn L0K 1S0 | (705) 756-2525 |
| Bush's Marine & Cottages 3279 Port Severn Rd, Port Severn L0K 1S0 | (705) 538-2378 |