Aller is a surname. Notable people with the surname include:
Arvo Aller (born 1973), Estonian politician
Carl Aller (1845–1926), Danish magazine publisher
Eder Aller (born 2007), Spanish footballer
Eleanor Aller, later Slatkin, née Altschuler, (1917–1995), American cellist
Heinrich Aller (born 1947), German politician
Laura Aller (1849–1917), Danish magazine editor and publisher
Lawrence H. Aller (1913–2003), American astronomer
Robert O. Aller (1930-2006), American aerospace engineer
Rodney Aller (1916–2005), American lawyer, naval officer and masters skier
Victor Aller (1905–1977), American pianist