Nika Fleiss (born 14 December 1984) is a Croatian former alpine skier.

Fleiss was born in Brežice, at the time SR Slovenia, SFR Yugoslavia.

[1] Fleiss represented Croatia in 2002, 2006 and 2010 Winter Olympics.

[1] Her best World Cup result is 6th place in Lenzerheide (slalom) in 2005.

This biographical article relating to alpine skiing in Croatia is a stub.