Ioannis Sfairopoulos (alternate spellings: Giannis, Yiannis, Yannis, Sferopoulos) (Greek: Γιάννης Σφαιρόπουλος; born March 21, 1967) is a Greek professional basketball coach who is currently a head coach for Crvena zvezda of the Basketball League of Serbia (KLS), the Adriatic League and the EuroLeague.

Sfairopoulos began playing basketball in the youth system of Apollon Kalamarias at the age of 12.

[8] On November 18, 2018, Sfairopoulos was hired as Maccabi Tel Aviv's new head coach, as he signed a 1+1⁄2-year deal with the Israeli Premier League team.

[11] On February 15, 2022, Sfairopoulos was sacked from the head coach position, after a loss in the Israeli Cup semifinals, which led to public discontent, as well as a disappointing EuroLeague campaign.

[12] On October 22, 2023, he became the new head coach of Crvena zvezda and signed a two-year contract with this club.

He was an assistant coach on the Greece national team that competed at the 2004 Summer Olympics.