Mendiga is a former civil parish in the municipality of Porto de Mós, Portugal. The population in 2011 was 930, in an area of 20.01 km. It was first mentioned in 1142 but only became a freguesia shortly after 1525. It is home to the multi-sport club ARCD Mendiga. On 28 January 2013 it merged with Arrimal to form Arrimal e Mendiga.

Population of the civil parish of Mendiga (1864–2011) Year Pop. ±% 1864 481 —     1878 541 +12.5% 1890 660 +22.0% 1900 686 +3.9% 1911 782 +14.0% 1920 776 −0.8% 1930 825 +6.3% 1940 961 +16.5% 1950 987 +2.7% 1960 1,019 +3.2% 1970 991 −2.7% 1981 963 −2.8% 1991 938 −2.6% 2001 1,016 +8.3% 2011 930 −8.5%