Nikki is a distinctive girls' name in England & Wales, ranking #557 in 2001 with 50 recorded births. The name reached its all-time peak in 1996 with 102 births ranking #337. Since 1996, the popularity has decreased by 51.0%. In 2001, approximately 1 in every 5,360 girls born was named Nikki. FALLING Recent data shows the name is currently falling.