Gayler is a surname. Notable people with the surname include:
Di Gayler (born 1948), Australian politician Herbert Gayler (1881–1917), British cyclist John Gayler (1943–2022), Australian politician Marie Laura Violet Gayler, English metallurgist Noel Gayler (1914–2011), American admiral William Gayler, United States Army major general Wolfgang Gayler (1934–2011), German conductor and pianist
See also Mount Gayler, Arkansas