Solenopsis geminata is a species of fire ant with a pan-tropical distribution, described by Fabricius in 1804 and commonly known as the tropical fire ant.
Originally classified within the Atta genus, this ant was later reclassified into Solenopsis, where it sits within the tribe Solenopsidini alongside other fire ant species. Its range spans tropical and subtropical regions across multiple continents, making it one of the more widely distributed fire ants. Like other members of its genus, S. geminata builds colonies in soil and is known for its aggressive defensive behaviour and painful sting, which has earned the fire ant group its common name. The species plays various ecological roles across its range, from predation on other invertebrates to seed dispersal, though it can also affect agricultural systems and native ant communities where it occurs in high densities.