The Adventures of Sir Lancelot is a British television series first broadcast in 1956, produced by Sapphire Films for ITC Entertainment and screened on the ITV network.

The series starred William Russell as the eponymous Sir Lancelot, a Knight of the Round Table in the time of King Arthur at Camelot.

While the BBC's 1954 TV series Zoo Quest pre-dated The Adventures of Sir Lancelot's use of colour film stock by two years, this was only for the location work, whilst the studio links were captured by monochrome video cameras.

As was common with other British television series of the time, the programme employed several American screenwriters who had moved to Britain after being placed on the Hollywood blacklist, often under pseudonyms.

In the US, the series was released as a DVD boxed set on 19 August 2008 by Timeless Media Group with the exact same 12 episodes presented in colour, taken from US public domain prints.