Leith is a distinctive boys' name in United States, ranking #13581 in 2007 with 5 recorded births. The name reached its all-time peak in 2018 with 23 births ranking #4431. Since 1996, the popularity has decreased by 44.4%. In 2007, approximately 1 in every 415,047 boys born was named Leith. FALLING Recent data shows the name is currently falling.