| Business | Phone |
| Guelph Mayor Office 59 Carden St, Guelph N1H 3A1 | (519) 837-5643 |
| Ontario Probation & Parole 36 Wyndham St S, Guelph N1H 7J5 | (519) 837-6306 |
| Ontario Natural Resources 1 Stone Rd W, Guelph N1G 4Y2 | (519) 826-4955 |
| Ontario Family Court Office 36 Woolwich St, Guelph N1H 3T9 | (519) 822-7961 |
| Imperial Ornamental Metal Arts Rr 5 Stn Main, Guelph N1H 6J2 | (519) 824-1157 |
| Legal Aid 11 Suffolk St E #A, Guelph N1H 2H7 | (519) 824-0170 |
| Ontario Drivers & Vehicles 485 Silvercreek Pky N #16, Guelph N1H 7K5 | (519) 822-9352 |
| Ontario Community & Social Svc 60 Baker St, Guelph N1H 4G1 | (519) 822-7500 |
| Ontario Court Of Justice Dept Woolwich St, Guelph N1H 6J2 | (519) 824-4100 |
| Ontario Criminal Court Office 36 Wyndham St S, Guelph N1H 7J5 | (519) 836-2501 |
| Ontario Crown Attorney Office Woolwich St, Guelph N1H 6J2 | (519) 822-1031 |
| Ontario Correctional Svc Dept 781 York Rd, Guelph N1E 6N1 | (519) 822-0020 |
| Ontario Driver Examination Ofc 225 Woodlawn W #106, Guelph | (519) 824-2790 |
| Ontario Land Registry Office 1 Stone Rd W, Guelph N1G 4Y2 | (519) 826-3372 |
| Ontario Management Board Sec 1 Stone Rd W, Guelph N1G 4Y2 | (519) 826-3182 |
| Ontario Land Registry Office 21 Douglas St, Guelph N1H 2S7 | (519) 822-0251 |
| Ontario Memebers Of Prov Parl 173 Woolwich St, Guelph N1H 3V4 | (519) 836-4190 |
| Ontario Parole Board Western 785 York Rd, Guelph | (519) 837-6320 |
| Ontario Sheriff Dept 74 Woolwich St, Guelph N1H 3T9 | (519) 824-4430 |
| Ontario Small Claims Court 74 Woolwich St, Guelph N1H 3T9 | (519) 824-4169 |
| Puslinch Township Office Rr 3 Stn Main, Guelph N1H 6H9 | (519) 763-1226 |