Niki is a given name, and may refer to:
In music:
Niki Barr, American musician
Niki Chow, Hong Kong female actress and Cantopop singer
Niki Haris, singer, dancer, and backing vocalist
Niki Sullivan, American rock and roll guitar player
Niki (singer), Polish singer and dancer
In film/Television:
Niki Caro, film director and screenwriter who was born in Wellington, New Zealand
Niki de Saint Phalle, French sculptor, painter, and film maker
Niki Karimi, multi-award winning Iranian actress and movie director
Niki Marvin, film producer active since the 1980s
Niki Sanders, a fictional character on the television show Heroes
Niki Stevens, a fictional character on the television show The L Word
In sports:
Niki Bakoyianni, Greek high jumper
Niki Garagouni, Greek volleyball player
Niki Jenkins, Canadian judoka
Niki Lauda, Austrian entrepreneur, former Formula One racing driver and three-time Formula One World Champion
Niki Leferink, Dutch football (soccer) player
Niki Panetta, Greek triple jumper
Niki Shaw, British bodybuilder
Niki-Katerina Sidiropoulou, Greek fencer
Niki Xanthou, Greek long jumper
Niki Zimling, Danish football (soccer) player
In other fields:
Niki Albon, British YouTuber and radio personality
Niki Davis, New Zealand computer scientist
Niki Delisle, Canadian businessman
Niki Goulandris, Greek philanthropist
Niki Marangou, Cypriot writer and artist
Niki Shadrow, fashion personality, producer, celebrity stylist
Niki Taylor, American model
Niki Tzavela, Greek politician