Rossomyrmex
 Rossomyrmex is a genus of slave-making ant in the subfamily Formicinae. The genus consists of four species each with a single host from the genus Proformica and has a very wide range of distribution from China to southeastern Spain from huge extended plains to the top of high mountains. Rossomyrmex is one of two obligate slave-making genera in the subfamily Formicinae the other being Polyergus. Both genera evolved slave-making behavior independently and are close phylogenetic relatives.