Mawneys (from 1965 to 2002 Mawney) is an electoral ward in the London Borough of Havering.

There was a revision of ward boundaries in Havering in 2022.

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

[6] There was a revision of ward boundaries in Havering in 1978.

[10] The by-election took place on 10 November 1983, following the resignation of Meirion Owens.