A koeksister (/ˈkʊksɪstər/; Afrikaans: [ˈkukˌsəs.tər] ^ⓘ) is a traditional Afrikaner confectionery made of fried dough infused in syrup or honey. There is also a Cape Malay version of the dish, which is a fried ball of dough that is rolled in desiccated coconut called a koesister. The name derives from the Dutch and Afrikaans word "koek", which generally means a wheat flour confectionery.

Koeksisters are prepared by frying plaited dough strips in oil, then submersing the hot fried dough into ice cold sugar syrup. Koeksisters have a golden crunchy crust and liquid syrup centre, are very sticky and sweet, and taste like honey.

A monument of a koeksister in the Afrikaner community of Orania alludes to the Afrikaner tradition of baking them to raise funds for the building of churches and schools.