Calvyn is a distinctive boys' name in United States, ranking #9434 in 2001 with 6 recorded births. This places Calvyn in the bottom 23% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2010 with 10 births ranking #7675. In 2001, approximately 1 in every 323,805 boys born was named Calvyn. FALLING Recent data shows the name is currently falling.