Masahiro is a distinctive boys' name in United States, ranking #11750 in 2012 with 6 recorded births. This places Masahiro in the bottom 18% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1998 with 9 births ranking #6647. In 2012, approximately 1 in every 316,104 boys born was named Masahiro. STABLE Recent data shows the name is currently stable.