Matteo Viola (born 7 July 1987) is an Italian professional tennis player. He competes mainly on the ATP Challenger Tour and ITF Futures, both in singles and doubles. He reached his highest ATP singles ranking, No. 118 on 18 March 2013 and his highest ATP doubles ranking, No. 171 on 24 September 2012.Viola lost to Jan Hernych of the Czech Republic in the Swiss Open.