British Academy Television Award for Best Supporting Actor

This is a list of the British Academy Television Award for Best Supporting Actor, presented by the British Academy of Film and Television Arts (BAFTA).

The awards, informally known as the BAFTA TV Awards, have been awarded since 1954. From 1968–1997, the BAFTA TV Awards and the BAFTA Film Awards were presented in one joint ceremony. Since 1998, there have been two separate ceremonies. The film awards are held in February, usually two weeks ahead of the Academy Awards (Oscars) in the United States, while the TV awards are held in late May. The BAFTA TV Awards are also the UK equivalent to the Emmy Awards in the US.

The awards for Best Supporting Actor and Best Supporting Actress were first presented at the 2010 ceremony.