Igor Stefan Kokoškov (Serbian Cyrillic: Игор Стефан Кокошков; born December 17, 1971) is a Serbian professional basketball coach who is the lead assistant coach for the Dallas Mavericks of the National Basketball Association.

Most recently, he spent a season in Turkey with Fenerbahçe. Before that, he spent 19 years in the National Basketball Association (NBA) as an assistant coach, with his most recent tenure there being with the Sacramento Kings, after briefly being a head coach for the Phoenix Suns for a full season.

Kokoškov was the first European to be a full-time assistant coach in NCAA Division I college basketball, and the first non-American to hold such a position in the NBA.[1] In 2004, he became the first non-American assistant coach to win an NBA championship, and the first to serve on an NBA All-Star Game coaching staff.[2] He is also the first coach born and raised outside of North America to be hired as a head coach in the NBA.

He won EuroBasket 2017, while working as the head coach of the Slovenian men’s national team.,