| Election Name: | 1985 Northumberland County Council election[1] |
| Country: | Northumberland |
| Type: | parliamentary |
| Ongoing: | no |
| Previous Election: | 1981 Northumberland County Council election |
| Previous Year: | 1981 |
| Next Election: | 1989 Northumberland County Council election |
| Next Year: | 1989 |
| Seats For Election: | All 66 seats to Northumberland County Council |
| Majority Seats: | 34 |
| Turnout: | 41.0% |
| Party1: | Labour Party (UK) |
| Last Election1: | 34 |
| Seats1: | 30 |
| Seat Change1: | 4 |
| Popular Vote1: | 35,498 |
| Percentage1: | 37.5% |
| Party2: | SDP-Liberal Alliance |
| Last Election2: | 15 |
| Seats2: | 20 |
| Seat Change2: | 5 |
| Popular Vote2: | 33,570 |
| Percentage2: | 35.5% |
| Party3: | Conservative Party (UK) |
| Last Election3: | 14 |
| Seats3: | 12 |
| Seat Change3: | 2 |
| Popular Vote3: | 19,400 |
| Percentage3: | 20.5% |
| Party4: | Independent (politician) |
| Last Election4: | 2 |
| Seats4: | 3 |
| Seat Change4: | 1 |
| Popular Vote4: | 8,302 |
| Percentage4: | 5.4% |
| Party5: | Independent Conservative |
| Last Election5: | 0 |
| Seats5: | 1 |
| Seat Change5: | 1 |
| Popular Vote5: | 851 |
| Percentage5: | 0.9% |
| Control of Council | |
| Before Party: | Labour Party |
| Posttitle: | Control of Council after election |
| After Party: | No overall control |
Local elections to Northumberland County Council, a county council in the north east of England, were held on 2 May 1985. The Labour Party lost overall control of the council, which fell under no overall control.