Selwyn is a distinctive boys' name in United States, ranking #13915 in 2017 with 5 recorded births. The name reached its all-time peak in 1998 with 16 births ranking #4376. Since 1996, the popularity has decreased by 54.5%. In 2017, approximately 1 in every 370,063 boys born was named Selwyn. FALLING Recent data shows the name is currently falling.