Japheth is a distinctive boys' name in United States, ranking #2970 in 2009 with 40 recorded births. The name reached its all-time peak in 2007 with 51 births ranking #2488. Since 1996, the popularity has increased by 110.5%. In 2009, approximately 1 in every 49,583 boys born was named Japheth. STABLE Recent data shows the name is currently stable.