| Business | Phone |
| Ontario Day Nursery Licensing 435 James St S #112, Thunder Bay P7E 6S7 | (807) 475-1199 |
| Ontario Probation & Parole 189 Red River Rd #402, Thunder Bay P7B 1A2 | (807) 343-7521 |
| Ontario Provincial Div 1805 Arthur St E, Thunder Bay P7E 2R6 | (807) 625-1610 |
| Ontario Trades Certificates 28 Cumberland St N, Thunder Bay P7A 4K9 | (807) 345-8888 |
| Michael Gravelle Constituency 215 Van Norman St #101, Thunder Bay P7A 4B6 | (807) 345-3647 |
| Onatrio Sheriff Dept 277 Camelot St, Thunder Bay P7A 4B3 | (807) 343-2700 |
| Ontario Archaeology Branch 1825 Arthur St E, Thunder Bay P7E 5N7 | (807) 475-1551 |
| Ontario Attorney General Ofc 277 Camelot St, Thunder Bay P7A 4B3 | (807) 343-2720 |
| Ontario Centre-Northern Forest 955 Oliver Rd, Thunder Bay P7B 5E1 | (807) 343-4037 |
| Ontario Community & Social Svc 435 James St S #112, Thunder Bay P7E 6S7 | (807) 473-3130 |
| Ontario Community Care Access 1159 Alloy Dr #200, Thunder Bay P7B 6M8 | (807) 345-7339 |
| Ontario Citizenship-Ministry 435 James St S, Thunder Bay P7E 2V6 | (807) 475-1683 |
| Ontario Correctional Svc Dept 285 Macdougall St, Thunder Bay P7A 2K6 | (807) 345-7364 |
| Ontario Clean Water Agency 1001 William St, Thunder Bay P7B 6J9 | (807) 623-2611 |
| Ontario Courts Dept 1805 Arthur St E, Thunder Bay P7E 2R6 | (807) 625-1600 |
| Ontario Correctional Svc Dept Hwy 61, Thunder Bay P7C 4V2 | (807) 475-8401 |
| Ontario Court Reporter Ofc 277 Camelot St, Thunder Bay P7A 4B3 | (807) 343-2721 |
| Ontario Courts Dept 277 Camelot St, Thunder Bay P7A 4B3 | (807) 343-2725 |
| Ontario Driver & Vehicle 227 Pearl St, Thunder Bay P7B 1E3 | (807) 344-9271 |
| Ontario Drivers & Vhcls Dept 224 Miles St E, Thunder Bay P7C 1J6 | (807) 623-5461 |
| Ontario Drivers & Vhcls Dept 615 James St S, Thunder Bay P7E 6P6 | (807) 473-2122 |
| Ontario Driver & Vehicle Truck Spruce River Rd, Thunder Bay P7B 6B3 | (807) 683-3650 |
| Ontario Drug Benefits Dept 435 James St S, Thunder Bay P7E 2V6 | (807) 475-1351 |
| Ontario Education-Ministere 435 James St S #336, Thunder Bay P7E 6S9 | (807) 475-1571 |
| Ontario Driver & Vehicle Truck Arthur St W, Thunder Bay | (807) 939-1682 |
| Ontario Environment Ofc 435 James St S #331, Thunder Bay P7E 6S7 | (807) 475-1205 |
| Ontario Fire Marshal's Ofc 640 Mountdale Ave, Thunder Bay P7E 6G8 | (807) 473-3110 |
| Ontario Driver & Vehicle Truck Dawson Rd, Thunder Bay | (807) 768-1648 |
| Ontario Emergnecy Measures 640 Mountdale Ave, Thunder Bay P7E 6G8 | (807) 473-3191 |
| Ontario Hunting Licences 435 James St S, Thunder Bay P7E 2V6 | (807) 475-1471 |
| Ontario Health 580 Algoma St N, Thunder Bay | (807) 343-4300 |
| Ontario Housing Dept 435 James St S #223, Thunder Bay P7E 6S7 | (807) 475-1465 |
| Ontario Legal Aid 209 Van Norman St, Thunder Bay P7A 4B6 | (807) 345-1972 |
| Ontario Municipal Affairs Dept 435 James St S #223, Thunder Bay P7E 6S7 | (807) 475-1651 |
| Ontario Land Registry Ofc 189 Red River Rd, Thunder Bay P7B 1A2 | (807) 343-7436 |
| Ontario Northern Dev & Mines 435 James St S, Thunder Bay P7E 2V6 | (807) 475-1425 |
| Ontario Labour Dept 435 James St S #222, Thunder Bay P7E 6S7 | (807) 475-1691 |
| Ontario Manager Court 277 Camelot St, Thunder Bay P7A 4B3 | (807) 343-2747 |
| Ontario Realty Corp 421 James St Rr 4 #103, Thunder Bay P7C 4Z2 | (807) 473-3060 |
| Ontario Nw Region Aviation 1580 Arthur St W, Thunder Bay P7K 1A6 | (807) 476-2200 |
| Ontario Native Affairs 421 James St Rr 4 #101, Thunder Bay P7C 4Z2 | (807) 473-3132 |
| Ontario Retail Sales Tax Dept 130 Syndicate Ave S #300, Thunder Bay P7E 1C6 | (807) 625-5840 |
| Ontario Science & Tech Unit 25th Side Rd, Thunder Bay | (807) 939-2501 |
| Ontario Public Health Lab Dept 336 Syndicate Ave S, Thunder Bay P7E 1E3 | (807) 622-6449 |
| Ontario Probation & Parole 1265 Arthur St E #700, Thunder Bay P7E 6E7 | (807) 473-3063 |
| Ontario Regional Coroner's Ofc 189 Red River Rd, Thunder Bay | (807) 343-7663 |
| Ontario Transportation Dept 615 James St S, Thunder Bay P7E 6P6 | (807) 473-2000 |
| Ontario Savings Office 189 Red River Rd, Thunder Bay P7B 1A2 | (807) 343-7390 |
| Ontario Small Claims 277 Camelot St, Thunder Bay P7A 4B3 | (807) 343-2728 |
| Ontario Victim-Witness Assist 1805 Arthur St E, Thunder Bay P7E 2R6 | (807) 625-1627 |
| Thunder Bay-Atikokan 240 Syndicate Ave S, Thunder Bay P7E 1C8 | (807) 623-9237 |
| Thunder Bay Comm Info Ctr 125 Syndicate Ave S #17, Thunder Bay P7E 6H8 | (807) 626-9626 |
| Tourism Division 615 James St S #201, Thunder Bay P7E 6P6 | (807) 475-1211 |
| Workplace Safety & Insurance 1113 Jade Crt #200, Thunder Bay P7B 6V3 | (807) 343-1710 |
| Fed Nor Thunder Bay 244 Lincoln St, Thunder Bay P7B 5L2 | (807) 766-1800 |