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,[1] but were beaten by Meath in the Leinster quarter-final.

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

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

[4]