Lainy is a distinctive girls' name in United States, ranking #11571 in 2001 with 8 recorded births. This places Lainy in the bottom 36% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2003 with 15 births ranking #7421. In 2001, approximately 1 in every 225,070 girls born was named Lainy. RISING Recent data shows the name is currently rising.