In Greek mythology, Aergia (; , 'inactivity') is the personification of sloth, idleness, indolence and laziness. She is the translation of the Latin Socordia, or Ignavia: the name was translated into Greek because Hyginus mentioned her being based on a Greek source, and thus she can be considered as both a Greek and Roman goddess. Aergia's opposite character is Horme, a goddess of effort.
Aergia was the daughter of the primordial deities Aether and Gaia.
According to Statius, Aergia was said to be the 'torpid' guard in the court of Hypnos (Sleep) in the Underworld.