Dewi is a distinctive boys' name in England & Wales, ranking #722 in 2006 with 36 recorded births. The name reached its all-time peak in 1996 with 55 births ranking #390. Since 1996, the popularity has decreased by 34.5%. In 2006, approximately 1 in every 8,898 boys born was named Dewi. RISING Recent data shows the name is currently rising.