Headstone South was an electoral ward in the London Borough of Harrow from 1978 to 2022. The ward was first used in the 1978 elections and last used for the 2018 elections.
It returned councillors to Harrow London Borough Council.
There was a revision of ward boundaries in Harrow in 2002.
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.