San Antonio Abad is a district of the Spanish municipality Cartagena. It is located in the south of the territory, has an area of 9.738 km2 and a population of 45,335. The district has a coastal area in its south-west and a cave and paleonthologic site named Cueva de los Aviones is occurs in San Antonio Abad. The northern part of the district is in an urban continuity with the main city (Cartagena). The eastern part is also united with the main city, but in a lesser extent.