Arzila is a former civil parish in the municipality of Coimbra, Portugal. The population in 2011 was 655, in an area of 3.45 km. On 28 January 2013 it merged with Taveiro and Ameal to form Taveiro, Ameal e Arzila. There is a Moroccan city with the same name, indicating its etymology is of Punic origin.

It is home to the Paul de Arzila, a natural reserve with a large number of species of birds among other animals. Its patron Immaculate Conception is celebrated annually on 8 December.

Population of the civil parish of Arzila (1864–2011) Year Pop. ±% 1864 308 —     1878 328 +6.5% 1890 395 +20.4% 1900 476 +20.5% 1911 528 +10.9% 1920 544 +3.0% 1930 578 +6.2% 1940 617 +6.7% 1950 663 +7.5% 1960 653 −1.5% 1970 706 +8.1% 1981 974 +38.0% 1991 711 −27.0% 2001 728 +2.4% 2011 655 −10.0%