Nukâka Coster-Waldau ( Sascha Nukâka Motzfeldt; born 23 February 1971), better known professionally as Nukâka, is a Greenlandic actress and beauty pageant titleholder who won Miss Greenland. She is married to Danish actor Nikolaj Coster-Waldau and has two daughters with him.
Coster-Waldau is of Inuit, German and Norwegian descent and was born in Uummannaq, Greenland, Kingdom of Denmark. She is the daughter of Vivi and Josef Motzfeldt, a Greenlandic politician and government minister.
As Miss Greenland, Coster-Waldau (then named Nukâka Motzfeldt) participated in the 1990 Miss Universe Pageant, finishing in 19th place in the preliminaries, giving Greenland its highest placement at Miss Universe.