| Election Name: | 2018 Harrow Borough Council election |
| Type: | Parliamentary |
| Ongoing: | no |
| Previous Election: | 2014 Harrow London Borough Council election |
| Previous Year: | 2014 |
| Election Date: | 3 May 2018 |
| Seats For Election: | All 63 seats to Harrow London Borough Council |
| Majority Seats: | 32 |
| Party1: | Labour Party (UK) |
| Last Election1: | 34 seats, 40.0% |
| Seats1: | 35 |
| Seat Change1: | 1 |
| Popular Vote1: | 98,148 |
| Percentage1: | 46.6% |
| Swing1: | 6.6% |
| Party2: | Conservative Party (UK) |
| Last Election2: | 26 seats, 40.6% |
| Seats2: | 28 |
| Seat Change2: | 2 |
| Popular Vote2: | 94,902 |
| Percentage2: | 45.1% |
| Swing2: | 4.5% |
| Map Size: | 250px |
| Council control | |
| Posttitle: | Council control after election |
| Before Party: | Labour Party (UK) |
| After Party: | Labour Party (UK) |
| Next Election: | 2022 Harrow London Borough Council election |
| Next Year: | 2022 |
The 2018 Harrow London Borough Council election took place on 3 May 2018 to elect members of Harrow London Borough Council in England.[1] This was on the same day as other local elections in England. The Conservatives had hoped to win control of the council from Labour, but Labour emerged with an increased number of seats and kept their majority. The Liberal Democrats lost their only seat in the borough. The Conservatives lost seats to Labour, but maintained their total of 28 by winning two seats that had been held by independents.[2]