| Business | Phone |
| Marathon Economic Development 52 Peninsula Rd, Marathon P0T 2E0 | (807) 229-1154 |
| Ontario Driver & Vehicle Lcnsn 6 Peninsula Rd, Marathon P0T 2E0 | (807) 229-2371 |
| Ontario Correctional Svc 52 Peninsula Rd, Marathon P0T 2E0 | (807) 229-2407 |
| Ontario Patrol Yards Highway 17, Marathon P0T 2E0 | (807) 229-0340 |
| Ontario Northern Development 52 Peninsula Rd, Marathon P0T 2E0 | (807) 229-1153 |
| Ontario Water Pollution Contrl Howe, Marathon P0T 2E0 | (807) 229-1186 |