Leith is a distinctive boys' name in United States, ranking #5686 in 2021 with 16 recorded births. The name reached its all-time peak in 2018 with 23 births ranking #4431. Since 1996, the popularity has increased by 77.8%. In 2021, approximately 1 in every 109,265 boys born was named Leith. FALLING Recent data shows the name is currently falling.