Rehaan is a distinctive boys' name in England & Wales, ranking #589 in 2008 with 55 recorded births. The name reached its all-time peak in 2007 with 66 births ranking #492. Since 1996, the popularity has increased by 816.7%. In 2008, approximately 1 in every 6,170 boys born was named Rehaan. FALLING Recent data shows the name is currently falling.