Mirza Bašić (Bosnian pronunciation: [bâʃitɕ]; born 12 July 1991) is a Bosnian professional tennis player. He has a career-high ATP singles ranking of No. 74, achieved on 19 February 2018 and a best doubles ranking of No. 203, achieved on 28 January 2019.
Bašić has won one ATP Tour singles title at the 2018 Sofia Open. He is a member of the Bosnia and Herzegovina Davis Cup team.
Bašić reached his first Grand Slam tournament after qualifying for the 2016 Australian Open and defeated Robin Haase. He became the second male player representing Bosnia and Herzegovina, after compatriot Damir Džumhur, to reach the main draw of a Grand Slam and record a major win.
In 2018, Bašić won his first ATP World Tour title at the Sofia Open as a qualifier, and reached the top 100 climbing 50 positions up in the rankings at world No. 76 on 12 February 2018. He entered the 2022 edition of the same tournament as a lucky loser.