The leader of the Labour Party is the highest position within the United Kingdom's Labour Party. The current holder of the position is Keir Starmer, who was elected to the position on 4 April 2020, following his victory in the party's leadership election.

The 2020 Labour Party leadership election was triggered after Jeremy Corbyn announced his intention to resign as the leader of the Labour Party following the party's defeat at the 2019 general election. It was won by Keir Starmer, who received 56.2 per cent of the vote on the first round. It was held alongside the 2020 Labour Party deputy leadership election, in which Angela Rayner was elected to succeed Tom Watson as deputy leader.