Marius Niculai (born 20 April 1979) in Constanța, is a former Romanian rugby union football player.

During his career, Niculai played for Farul Constanța in Romania, and for Stade lavelanétien and SC Pamiers all in France.

[1][2] Niculai gathered 2 caps for Romania, both of them in 2003.

He was a member of his national side for the 6th Rugby World Cup in 2003, where he played two matches in Pool A against Ireland and against the host country, the Wallabies.

This biographical article relating to Romanian rugby union is a stub.