Leith is a distinctive boys' name in United States, ranking #6857 in 2020 with 12 recorded births. The name reached its all-time peak in 2018 with 23 births ranking #4431. Since 1996, the popularity has increased by 33.3%. In 2020, approximately 1 in every 143,755 boys born was named Leith. FALLING Recent data shows the name is currently falling.