Azambuja, officially the Town of Azambuja, is a municipality in the Portuguese district of Lisbon, in the historical region of Ribatejo. The population in 2011 was 21,814, in an area of 262.66 km2. Until 2004, the municipality was part of the Lisbon Metropolitan Area, when they left the metropolitan area and joined into the NUTS III statistical subregion of Lezíria do Tejo.