Callender is a surname. Notable people with the surname include:
Charles Callender, owner of blackface minstrel shows in 19th century AmericaClarence Callender, athleteEmmanuel Callender, athleteEugene Callender (1926–2013), American pastor and activistJames T. Callender, late 18th and early 19th century journalistJohn Callender, Scottish psychiatrist and philosopherColin Callender, English television producerReg Callender (1892–1915), English footballerRobert Callender, Canadian cricketerMary Pauline Callender, author of puberty and menstruation advice booklets in the 1920s and 1930s used to promote Kotex products