Nina Helen Nilsen (born 4 February 1970) is a Norwegian sport wrestler. Her achievements include a silver medal at the world championships and twice national champion.
Nilsen became Norwegian champion in 1989 and 2000, and won silver medals in 1988, 1998, 1999 and 2001.
She won a silver medal at the 1989 World Wrestling Championships.
Nilsen was born in Kristiansund on 4 February 1970.