Algester is an outer suburb of City of Brisbane, Queensland, Australia. It is 18 kilometres (11 mi) south-west of the central business district. The suburb's population was estimated in the 2011 census at 8,262. The suburbs of Algester, Calamvale and now Parkinson, sit on the southern border or boundary of the City of Brisbane local government area with suburbs of Logan City such as Browns Plains and Regents Park.
The suburb's name is a corruption of the name of the English town of "Alcester". Briefly in the mid-to-late-1970s the suburb was colloquially named Ridgewood Heights after the Ridgewood Heights property development that then made up most of its land area, but had officially been known as Algester from 1972.