Andrew Willis (born 3 December 1990) is an English former competitive swimmer who has represented Great Britain at the Olympics, the FINA World Championships and the European Championships, and England at the Commonwealth Games.

He finished 4th in the 2014 European Championships and went on to win a bronze medal at the 2014 Commonwealth Games in the 200-metre breaststroke final in Glasgow.

He participated in the 2016 European Championships, and finished 4th in the final of the 200-metre breaststroke in the 2016 Summer Olympics in Rio.

He went on to win a silver medal in the 2016 World Championships (SC).

Willis made the final for both the 100-metre and 200-metre breaststroke in the 2018 Commonwealth Games, where he finished 8th and 4th respectively.