Cortni is a distinctive girls' name in United States, ranking #5998 in 2000 with 18 recorded births. The name reached its all-time peak in 1997 with 33 births ranking #3462. Since 1996, the popularity has decreased by 14.3%. In 2000, approximately 1 in every 100,887 girls born was named Cortni. FALLING Recent data shows the name is currently falling.