Mahdi is a distinctive boys' name in England & Wales, ranking #648 in 2009 with 49 recorded births. The name reached its all-time peak in 2007 with 60 births ranking #526. Since 1996, the popularity has increased by 157.9%. In 2009, approximately 1 in every 6,901 boys born was named Mahdi. STABLE Recent data shows the name is currently stable.