Japheth is a distinctive boys' name in United States, ranking #3218 in 2002 with 28 recorded births. The name reached its all-time peak in 2007 with 51 births ranking #2488. Since 1996, the popularity has increased by 47.4%. In 2002, approximately 1 in every 69,338 boys born was named Japheth. STABLE Recent data shows the name is currently stable.