Cortni is a distinctive girls' name in United States, ranking #11652 in 2006 with 9 recorded births. The name reached its all-time peak in 1997 with 33 births ranking #3462. Since 1996, the popularity has decreased by 57.1%. In 2006, approximately 1 in every 211,230 girls born was named Cortni. FALLING Recent data shows the name is currently falling.