Gąsior or Gonsior ( ) is a Polish-language surname, meaning "gander". Pronounced identically, Gąsior is the standard spelling in Poland while Gonsior appears at a lower frequency. Alternative forms include Gęsior and Gensior, which are likewise pronounced identically (both ).

People Dariusz Gęsior (born 1969), Polish footballer Bohdan Gonsior (born 1937), Polish fencer Franciszek Gąsior (1947–2021), Polish handball player Łukasz Gąsior (born 1986), Polish swimmer Włodzimierz Gąsior (born 1948), Polish football manager

See also