2009–10 FIBA EuroChallenge was the seventh edition of Europe's third-tier level transnational men's professional club basketball FIBA EuroChallenge Tournament, organized by FIBA Europe.

The Regular Season begins from November 24, 2009.

The quarterfinals were played in a best-of-three playoff format.

The winners of the groups in the top 16 hosted game one and three (if possible).

The Final Four was held from 30 April until 2 May and was hosted at the Lokhalle in Göttingen, Germany.