Nina Sten-Knudsen (born 1957) is a Danish painter who played a central role in the Danish Wild Youth trend in the 1980s. She gained recognition from her participation in the 1982 exhibition Kniven på hovedet (Knife on the Head) held at Tranegården in Gentofte. More recently, her large landscapes raise existential questions of past and present, the merits of the modern world and the meaning of painting.