Arun is a distinctive boys' name in England & Wales, ranking #994 in 2016 with 29 recorded births. The name reached its all-time peak in 2007 with 105 births ranking #349. Since 1996, the popularity has decreased by 59.7%. In 2016, approximately 1 in every 11,446 boys born was named Arun. FALLING Recent data shows the name is currently falling.