Milwaukee Bucks superstar Giannis Antetokounmpo isn’t the only one from his family to reach the NBA. He has two brothers with NBA experience, albeit minimally. One is Thanasis, who even played for the Bucks before, and the other is Kostas, who saw action with the Dallas Mavericks and the Los Angeles Lakers.
Although Kostas, who played college basketball with the Dayton Flyers before being taken in the second round of the 2018 NBA draft by the Philadelphia 76ers, is not signed with an NBA team, that doesn’t mean he’s not busy with basketball anymore.
Milwaukee Bucks, Giannis Antetokounmpo, Thanasis Antetokounmpo
Dec 23, 2023; New York, New York, USA; Milwaukee Bucks forward Giannis Antetokounmpo (l) and his brother Milwaukee Bucks forward Thanasis Antetokounmpo (r) watch the game from the bench in the fourth quarter against the New York Knicks at Madison Square Garden. Mandatory Credit: Wendell Cruz-USA TODAY Sports
He has plenty of experience in Europe, where he continues to have a career. In the 2024-25 Liga ACB season, Kostas averaged 4.4 points, 3.5 rebounds and 1.0 assists while shooting an incredibly efficient 73.5 percent from the floor for Murcia. He also played before for ASVEL, Fenerbahçe and Panathinaikos.
After a season with Murcia, Kostats will be taking his talents next to Olympiacos, as the club reportedly signed him to a two-year contract.
Kostas Antetokounmpo lands in @Olympiacos_BC and signs a two-year contract✍️ pic.twitter.com/Va4nC8lLvP
— EuroLeague (@EuroLeague) July 10, 2025
Milwaukee Bucks superstar shares news of brother joining Olympiacos
Giannis Antetokounmpo, Milwaukee Bucks
Mar 30, 2025; Milwaukee, Wisconsin, USA; Milwaukee Bucks forward Giannis Antetokounmpo (34) during the game against the Atlanta Hawks at Fiserv Forum. Mandatory Credit: Jeff Hanisch-Imagn Images
Giannis also helped spread the word of Kostas’ new landing spot, as the two-time NBA Most Valuable Player reshared a post on Instagram showing Kostas being welcomed by Olympiacos Piraeus.
Screenshot 2025 07 11 080757
Via Giannis Antetokounmpo’s IG
Kostas is still just 27 years old and will not turn 28 until November. Perhaps there is still a chance for him to make a return to the NBA, where Giannis continues to be a force.
The “Greek Freak” is coming off yet another fantastic season, as he averaged 30.4 points, 11.9 rebounds and 6.5 assists through 67 games with the Bucks in the 2024-25 NBA campaign. He also finished third in the league MVP voting.
Dec 22, 2020; Los Angeles, California, USA; Los Angeles Lakers forward Kostas Antetokounmpo (37) reacts after receiving 2020 NBA Championship ring at Staples Center. Mandatory Credit: Kirby Lee-USA TODAY Sports
Dec 22, 2020; Los Angeles, California, USA; Los Angeles Lakers forward Kostas Antetokounmpo (37) reacts after receiving 2020 NBA Championship ring at Staples Center. Mandatory Credit: Kirby Lee-USA TODAY Sports
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