Barnhill is an electoral ward in the London Borough of Brent.

It returns two councillors to Brent London Borough Council.

[b] There was a revision of ward boundaries in Brent in 2022.

[1] There was a revision of ward boundaries in Brent in 2002.

The by-election took place on 23 January 2020, following the resignations of Michael Pavey and Sarah Marquis.