Rayer is a surname. Notable people with this surname include:
Christian Rayer (born 1945), French motorcycle racer Ellie Rayer (born 1996), English field hockey player Francis G. Rayer (1921-1981), British science fiction writer Mike Rayer (born 1965), Welsh rugby union player Pierre François Olive Rayer (1793–1867), French physician RSN Rayer (born 1971), Malaysian politician and lawyer
See also Rayer Bazaar, Dhaka