Callender is a surname. Notable people with the surname include:
Charles Callender, owner of blackface minstrel shows in 19th century America
Clarence Callender, athlete
Emmanuel Callender, athlete
Eugene Callender (1926–2013), American pastor and activist
James T. Callender, late 18th and early 19th century journalist
John Callender, Scottish psychiatrist and philosopher
Colin Callender, English television producer
Reg Callender (1892–1915), English footballer
Robert Callender, Canadian cricketer
Mary Pauline Callender, author of puberty and menstruation advice booklets in the 1920s and 1930s used to promote Kotex products
