The 2011 FIBA U20 European Championship Division B was the 7th edition of the Division B of the European basketball championship for men's national under-20 teams.

It was played from 14 to 24 July 2011 in Sarajevo, Bosnia and Herzegovina.

The first two teams from each group advance to the quarterfinal round; the third and fourth teams advance to the 9th–16th place classification; the other teams will play in the 17th–22nd place classification groups.

The first two teams from each group advance to the 9th–12th place playoffs; the other teams will play the 13th–16th place playoffs.

The first teams from each group advance to the 17th place match; the second teams advance to the 19th place match; the last teams advance to the 21st place match.