Mario Hezonja (Croatian pronunciation: ; born 25 February 1995) is a Croatian professional basketball player for the Portland Trail Blazers of the National Basketball Association (NBA). He also represents the Croatian national team internationally. He primarily plays at the shooting guard position, but he can also play as a small forward. He was selected with the fifth overall pick in the 2015 NBA draft by the Orlando Magic.
Hezonja was promoted to the club level in his native Croatia when he was 12 years old, and at the age of 13, he stayed for two seasons with Dubrovnik. In 2010, Hezonja signed a contract with Croatian club, Zagreb. In 2011, he won the Nike International Junior Tournament with Zagreb. He was also named to the All-Tournament team, alongside teammate, Dario Šarić. He was forced to sit out the 2011–12 season because of mononucleosis.
In July 2012, Hezonja signed a three-year contract with Spanish club Barcelona, at the age of 17. He also had an option to extend his contract for an additional four years with the club. His former club, Zagreb, also got 150,000 euros in the name of a buyout, as he was still under contract. For the 2012–13 season, he was loaned to the reserve team of the club: Barcelona B of the LEB Oro, the Spanish second tier level division. In 2012, Hezonja was nominated for the FIBA Europe Young Player of the Year Award, but Jonas Valančiūnas eventually won the award.