Maracalagonis (Sardinian: Mara-Calagonis, mara meaning "marsh"), is a comune (municipality) in the Metropolitan City of Cagliari in the Italian region of Sardinia, located about 12 kilometres (7 mi) northeast of Cagliari. It has 7,883 inhabitants.

Maracalagonis borders the following municipalities: Castiadas, Quartu Sant'Elena (more specifically Salmagi), Quartucciu, Sinnai, Villasimius.