Oswin is a distinctive boys' name in United States, ranking #12247 in 2003 with 5 recorded births. This places Oswin in the bottom 4% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2018 with 28 births ranking #3861. In 2003, approximately 1 in every 395,054 boys born was named Oswin. FALLING Recent data shows the name is currently falling.