The 2011 Madrilenian regional election was held on Sunday, 22 May 2011, to elect the 9th Assembly of the Community of Madrid. All 129 seats in the Assembly were up for election. The election was held simultaneously with regional elections in twelve other autonomous communities and local elections all throughout Spain.

The Assembly of Madrid or Madrid Assembly is the unicameral autonomous legislature of the Autonomous Community of Madrid since the approval of the Madrid Charter of Autonomy in 1983.