Japheth is a distinctive boys' name in United States, ranking #2858 in 2020 with 42 recorded births. The name reached its all-time peak in 2007 with 51 births ranking #2488. Since 1996, the popularity has increased by 121.1%. In 2020, approximately 1 in every 41,073 boys born was named Japheth. STABLE Recent data shows the name is currently stable.