Lenuţa Nicoleta Grasu is a retired Romanian discus thrower.

She was born on 11 September 1971 in Secuieni as Nicoleta Grădinaru, but took a new surname when she married fellow discus thrower Costel Grasu.

A few years followed without any international medals, but she did finish sixth at the 2004 Summer Olympics and fifth at the 2005 World Championships.

Her personal best throw is 68.80 metres, achieved in August 1999 in Poiana Braşov.

Nicoleta and Costel's child Ștefan Grasu is a professional basketball player.