Japhet is a distinctive boys' name in United States, ranking #10532 in 2004 with 6 recorded births. This places Japhet in the bottom 20% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2015 with 16 births ranking #5612. In 2004, approximately 1 in every 330,800 boys born was named Japhet. STABLE Recent data shows the name is currently stable.