There are at least three known artists with this name:

1) Nicole Zef… Read Full Bio ↴There are at least three known artists with this name:

1) Nicole Zefanya, known professionally as NIKI, is an Indonesian rising R&B singer-songwriter under 88rising label--along with another rising star fellow Rich Brian and Joji. She has written songs since she was 13 and produced her own music which she uploaded on Youtube, as well as her soothing cover songs.

2)Niki aka Kairit Tuhkanen is Estonian Pop singer. Her songs are taken from Russian Pop artist Zhanna Friske.
Kairit was born on the 15th of may 1980. She gathered more popularity in 2006 when she was chosen Estonia's second best channel "Kanal 2" weather reporter.

3) niki is a producer on Niconico and piapro notable for making high-quality rock songs using Lily. His 2nd song won in the anim.o.v.e "Lily Utawasetemita Contest".