Japheth is a distinctive boys' name in United States, ranking #2959 in 2003 with 33 recorded births. The name reached its all-time peak in 2007 with 51 births ranking #2488. Since 1996, the popularity has increased by 73.7%. In 2003, approximately 1 in every 59,857 boys born was named Japheth. STABLE Recent data shows the name is currently stable.