2011 All-Ireland Under-21 Football Championship

The 2011 All-Ireland Under-21 Football Championship was the 48th staging of the All-Ireland Under-21 Championship since its establishment by the Gaelic Athletic Association in 1964.

Dublin were the defending champions, but were beaten by Meath in the Leinster quarter-final.

Galway defeated Cavan by 2–16 to 1–9 in the final at Croke Park, for their fourth title and their first since 2005.

Galway midfielder Tom Flynn was named Cadbury Hero of the Future.