Whetstone is an electoral ward in the London Borough of Barnet. The ward was first used in the 2022 elections. It returns two councillors to Barnet London Borough Council. Labour's Elly Rose has represented Whetstone since the ward's creation. The second seat has been held by Ezra Cohen since 2025, following the resignation of Liron Velleman.
The by-election took place on 15 May 2025, following the resignation of Liron Velleman. Velleman was later convicted of child sex offences, which were committed while he was councillor.
The election took place on 5 May 2022.