The 2016 London Assembly election was an election held on 5 May 2016 to elect the members of the London Assembly. It took place on the same day as the London mayoral election and the United Kingdom local elections. Four parties had AMs in the previous Assembly: London Labour led by Len Duvall, London Conservatives led by Gareth Bacon, London Greens led by Siân Berry, and the London Liberal Democrats led by Caroline Pidgeon.

The 2016 London mayoral election was held on 5 May 2016 to elect the Mayor of London, on the same day as the London Assembly election. It was the fifth election to the position of mayor, which was created in 2000 following a referendum in Greater London. The election used a supplementary vote system.