Arun is a moderately popular boys' name in England & Wales, ranking #331 in 2005 with 96 recorded births. The name reached its all-time peak in 2007 with 105 births ranking #349. Since 1996, the popularity has increased by 33.3%. In 2005, approximately 1 in every 3,223 boys born was named Arun. FALLING Recent data shows the name is currently falling.