Arun is a distinctive boys' name in England & Wales, ranking #2133 in 2025 with 11 recorded births. The name reached its all-time peak in 2007 with 105 births ranking #349. Since 1996, the popularity has decreased by 84.7%. In 2025, approximately 1 in every 24,721 boys born was named Arun. FALLING Recent data shows the name is currently falling.