Japheth is a distinctive boys' name in United States, ranking #3100 in 1997 with 24 recorded births. The name reached its all-time peak in 2007 with 51 births ranking #2488. Since 1996, the popularity has increased by 26.3%. In 1997, approximately 1 in every 78,545 boys born was named Japheth. STABLE Recent data shows the name is currently stable.