Jonathyn is a distinctive boys' name in United States, ranking #4880 in 1999 with 14 recorded births. The name reached its all-time peak in 2010 with 22 births ranking #4436. Since 1996, the popularity has increased by 55.6%. In 1999, approximately 1 in every 137,149 boys born was named Jonathyn. FALLING Recent data shows the name is currently falling.