Aenictus ceylonicus is a species of reddish brown army ant found in Southern India, Sri Lanka, Southeast Asia and Australia.

These ants are seen foraging underneath leaf litter in forests and well-vegetated areas, travelling in a trail of in three or more columns alongside each other, in parts of India.

The mesosoma and the head region are dark brown, while the gaster is oval and lighter in colour, nearly translucent.

[2] They occur in rainforests and moist deciduous forests building temporary nests on the ground and in rotting logs.

[citation needed] Like others in the genus, they prey on ants, social wasps and other arthropods.