Igor Stefan Kokoškov (Serbian Cyrillic: Игор Стефан Кокошков) (born 17 December 1971 in Banatski Brestovac village near Pančevo, Serbia, SFR Yugoslavia) is a Serbian assistant coach with the Cleveland Cavaliers of the National Basketball Association. At the age of 24 Kokoškov became the youngest coach in Yugoslavian basketball history shortly after suffering serious injuries sustained during an automobile accident that ended a promising playing career. Kokoškov is a graduate of the University of Belgrade.
Kokoškov coached various club teams in Belgrade and was on the coaching staff of the Yugoslav (now Serbia) men's and junior national teams.
His savvy, ambitious nature and command of the English language were factors when he was hired by the University of Missouri as a part of their coaching staff in 1999, the first European to hold such a position in NCAA Division I men's basketball.
The following year, Kokoškov became the first non-American to be hired as a full-time assistant coach in the NBA, by the Los Angeles Clippers. In 2003 he joined the Detroit Pistons staff of coach Larry Brown.
On 18 April 2008, Kokoškov was named the head coach of Georgia national basketball team.
On 20 June 2008, Kokoškov was named assistant coach of Phoenix Suns.
On June 18, 2010 Igor Kokoškov became an American citizen.
On 18 December 2011, Georgian President Mikheil Saakashvili awarded Kokoškov with Excellency of Georgia Order.
On 29 May 2013, Kokoškov was named assistant coach of Cleveland Cavaliers.