Sem is a distinctive boys' name in United States, ranking #11830 in 2000 with 5 recorded births. This places Sem in the bottom 2% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2006 with 12 births ranking #6838. In 2000, approximately 1 in every 392,786 boys born was named Sem. FALLING Recent data shows the name is currently falling.