Koster may refer to: People Koster (surname), a common Dutch surname Places Koster Islands, two islands west of Sweden Koster, North West, a town in South Africa named after Bastiaan Koster, the original farm owner Koster Site, an archeological site in Illinois named after Theodore Koster, the original farm owner Other uses Koster (beer), a German beer HSwMS Koster (M73), a Swedish Koster-class mine countermeasures vessel Koster Commando, a light infantry regiment of the South African Army See also Coster (disambiguation) Köster