Cortni is a distinctive girls' name in United States, ranking #4667 in 1998 with 23 recorded births. This places Cortni in the top 28% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1997 with 33 births ranking #3462. In 1998, approximately 1 in every 76,821 girls born was named Cortni. FALLING Recent data shows the name is currently falling.