Norma Kathleen Hemming (born September 1928 in Ilford, Essex, London, England – d. 4 July 1960 in Melbourne, Australia) was a British-Australian writer of science fiction and romance novels.

As N. K. Hemming published twenty stories in the 1950s, and also wrote and appeared in a series of plays that were performed at Australian science fiction conventions.

She was one of the first female members of the Sydney Futurian Society, joining after the inaugural Australian science fiction convention in 1952.

She was a contributor to and editor of Vertical Horizons, a fanzine specifically aimed at female science fiction fans.

Her themes include mutual attraction between earth women and male aliens, children with unearthly powers, Amazons in outer space, and planets ruled by matriarchies.