Zydrunas Ilgauskas (Lithuanian: Žydrūnas Ilgauskas; Lithuanian pronunciation: [ʒʲiːˈd̪rûːn̪ɐs̪ ɪɫˈɡɐ̂ˑʊ̯s̪kɐs̪]; born June 5, 1975) is an Lithuanian American retired professional basketball center of the National Basketball Association (NBA). He played for the Cavaliers from 1996 to 2010, and is the team's career leader in games played, rebounds, and blocks. He also played for the Miami Heat during the 2010–11 season.
In 2012, Ilgauskas joined the Cavaliers' front office, becoming a special advisor for the team.
Ilgauskas made his pro debut in his birthplace of Kaunas, Lithuania, with the Atletas Basketball Club in 1993. He averaged 20.3 points, 12.8 rebounds and 2.8 blocks per game in the 1994–95 season.
Ilgauskas was selected by the Cleveland Cavaliers with the 20th overall pick in the 1996 NBA draft. On August 1, 1996, he signed a multi-year deal with the Cavaliers. In the earliest parts of his career he suffered through a myriad of foot and ankle injuries. He spent the entire 1996–97 season on the injured list due to a broken bone in his right foot.