Namesakes
Eurovision Song Contest Winners:
1 winner
Nigar Jamal (a.k.a. Nikki) 2011 Azerbaijan 
Fictional Characters from Song Titles:
1 character
(character) Nikki 1984 Darling Nikki
Fictional Characters from Television:
4 characters
Nikki Ruark 1994 Heartbreak High
Nikki Alexander 1996 Silent Witness
Nikki Parker 1996; 1999 Moesha; The Parkers
Nikki Fernandez 2004 Lost
Notable Actors and Entertainers:
1 actor
Nikki Reed 1988-
Notable Writers:
1 poet/author
Nikki Giovanni 1943-
Olympic Medalists:
2 gold
(gold) Nikki Stone 1998 freestyle skiing
(gold) Nikki McCray 1996; 2000 basketball