Japheth is a distinctive boys' name in United States, ranking #3754 in 2010 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 2010, approximately 1 in every 68,515 boys born was named Japheth. STABLE Recent data shows the name is currently stable.