Cortni is a distinctive girls' name in United States, ranking #4236 in 2001 with 29 recorded births. The name reached its all-time peak in 1997 with 33 births ranking #3462. Since 1996, the popularity has increased by 38.1%. In 2001, approximately 1 in every 62,088 girls born was named Cortni. FALLING Recent data shows the name is currently falling.