Abstract
A checklist of all known species of the water beetle family Gyrinidae (whirligig beetles) recorded from Brazil is assembled. This checklist is based on literature published prior to 2012. A total of 206 species and subspecies are cited for Brazil, distributed among three genera (Enhydrus Laporte, 1834, Gyrinus Geoffroy, 1762 and Gyretes Brullé, 1835). For each species we also include a complete account of its nomenclature including synonyms and historical combinations. The geographical distribution of each species both inside and outside of Brazil is provided.