Aleksić () is a Serbo-Croatian surname, a patronymic derived from Aleksa. Notable people with the surname include:
Adam Aleksic (born 2001), American linguist and content creator Danijel Aleksić (born 1991), Serbian football player Milan Aleksić (born 1986), Serbian water polo player Milija Aleksic (1951–2012), former English football player Mija Aleksić (1923–1995), Serbian actor Miša Aleksić (1953–2020), Serbian musician Petar Aleksic (born 1968), Bosnian basketball coach Seka Aleksić (born 1981), Serbian singer Slavko Aleksić (1956–2025), Bosnian Serb Chetnik commander Srđan Aleksić (1966–1993), Bosnian Serb war-time hero