Barrat is a French surname. Notable people with the surname include:
Claude Barrat (c. 1658 – c. 1711), Canadian legal professional Georgie Barrat (1989), British tech journalist and television presenter James Barrat (1960), American documentary filmmaker, speaker, and author Martine Barrat (1933), French photographer, actress, dancer and writer Rex Barrat (1914–1974), French artist known especially for his landscape paintings Robert Barrat (1889–1970), American stage, motion picture, and television character actor