St Martin's is an electoral ward in the London Borough of Lambeth.

The ward was originally created in 1978 and abolished in 2002.

It was created again for the 2022 elections.

It returned three councillors to Lambeth London Borough Council from 1978 to 2002 and two councillors since 2022.

[1] *Saleha Jaffer was previously a councillor for St Leonards ward between 2014 and 2018.