Nikica Ljubek (born 19 October 1980) is a Croatian sprint canoer and marathon canoeist who competed in the early 2000s.

He was eliminated in the semifinals of both the C-1 1000 m and the C-2 500 m events at the 2000 Summer Olympics in Sydney.

[1] He later competed in canoe marathons, and won silver at the 2008 ICF Canoe Marathon World Championships in the Czech Republic in the C-1 26 km category.

In the 2010 World Championship held in Banyoles, Spain, he finished 4th in the same event.

He is the son of Matija Ljubek (1953–2000), a former Olympic and World Champion canoe racer who won four Olympic medals competing for Yugoslavia between 1976 and 1984.