Sikeli Nabou (born 5 March 1988) is a Fijian rugby union player.
Nabou was born in Levuka and educated at Ratu Kadavulevu School.
A lock, Nabou made his provincial debut with Counties Manukau in 2009 and scored the winning try in the 2013 Ranfurly Shield win over Hawke's Bay. He has played in France with Biarritz Olympique and Soyaux Angoulême.
Nabou was a member of the Fiji national team in 2017 and 2018, gaining six total caps.