Welsh Harp is an electoral ward in the London Borough of Brent. The ward was first used in the 2002 elections. It returns three councillors to Brent London Borough Council.
| align="center" rowspan=2 | 2 || align="center" rowspan=2 | Harbi Farah || align="center" rowspan=2 | || align="center" rowspan=2 | Incumbent || style="background-color: " | || align="center" | ||align="center" rowspan=2 | 2014, 2018, 2022 |- | style="background-color: " | || align="center" | |- | align="center" rowspan=2 | 3 || align="center" rowspan=2 | Mary Mitchell || align="center" rowspan=2 | || align="center" rowspan=2 | Incumbent || style="background-color: " | || align="center" | ||align="center" rowspan=2 | 2022 |- | style="background-color: " | || align="center" |
There was a revision of ward boundaries in Brent in 2022.
The election took place on 5 May 2022.
The election took place on 3 May 2018.
The election took place on 22 May 2014.
The election on 6 May 2010 took place on the same day as the United Kingdom general election.
The election took place on 4 May 2006.
The election took place on 2 May 2002.