Nicoleta Raluca Onel (born 8 March 1982) is a former Romanian artistic gymnast.

She drew notice at national and international competitions in the mid-1990s, but was forced to retire early after a spinal injury.

Her first major international success came in 1995, when she placed second in the all-around at the European Junior Championships in Belgium.

At the 1997 World Junior Championships, Onel won silver medals with the Romanian team and in the individual all-around.

In 2001, she was offered a coaching position in the United Arab Emirates, at the International School of Choueifat in Al Ain.