Ciutadella de Menorca (officialy, Catalan) or just Ciutadella (common) (Spanish: Ciudadela) is a town and a municipality on the western side of Minorca, one of the Balearic Islands (Spain).

Its main towns are Ciutadella (21223 h), Santandrià (3763 h), Tres Alqueries (2686 h) and Cales Piques (977 h), with many more smaller nuclei these.

Its population in 2008 is 28,696.
Area: 186,34 km² [Population density: 154,00 hab./km²]
Coordinates: 40°01′N 3°49′E