Japheth is a distinctive boys' name in United States, ranking #2783 in 2015 with 43 recorded births. The name reached its all-time peak in 2007 with 51 births ranking #2488. Since 1996, the popularity has increased by 126.3%. In 2015, approximately 1 in every 44,564 boys born was named Japheth. STABLE Recent data shows the name is currently stable.