is an Italian former professional footballer who played as a forward. A talented and technically gifted player, he was usually deployed as a supporting forward, but could also play as an attacking midfielder, winger, or as a striker. Nicknamed Il Gioiello di Bari Vecchia (\"the jewel of Old Bari\"), and Fantantonio (\"fantastic Antonio\"), he was known for his short temper as much as his skill and ability on the pitch. Cassano won an Italian and Spanish league title each throughout his career as major honours.

Cassano began his senior club career with hometown club Bari in 1999; his performances earned him a transfer to Roma two years later, where he won the Supercoppa Italiana and was twice named Serie A Young Footballer of the Year in 2001 and 2003. In 2006, he moved to La Liga club Real Madrid, where he won a league title, but was chastised for his poor behaviour, inconsistent performances, and work-rate, and returned to Italy a year later, on loan to Sampdoria. There, he refound his form, and was signed by the club on a permanent basis in 2008. He then spent single seasons with AC Milan and cross-city rivals Inter Milan, winning a Serie A title and his Supercoppa Italiana with the former, before signing for Parma in 2013. In 2015, he returned to Sampdoria, and in 2017, signed with Verona. He failed to make an appearance for the club and subsequently retired.

At international level, Cassano represented the Italy national football team on 39 occasions between 2003 and 2014, scoring 10 goals; he took part at three UEFA European Championships, and one FIFA World Cup, winning a runners-up medal at UEFA Euro 2012. Along with Mario Balotelli, he is Italy's top-scorer in the UEFA European Championships, with three goals.

Cassano's short temper and disputes with managers and teammates led to birth of the neologism \"cassanata\" by his former coach, Fabio Capello, in 2002. The word is now regularly used by Italian sports journalists as a euphemism for any behavior incompatible with team spirit.