Barnhill is an electoral ward in the London Borough of Brent. The ward was first used in the 1978 elections. It returns two councillors to Brent London Borough Council.
There was a revision of ward boundaries in Brent in 2022.
The election took place on 5 May 2022.
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.
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.
The election took place on 7 May 1998.
The election took place on 5 May 1994.
The election took place on 3 May 1990.
The election took place on 8 May 1986.
The election took place on 6 May 1982.
The election took place on 4 May 1978.