Dewi is a distinctive boys' name in England & Wales, ranking #666 in 2005 with 39 recorded births. The name reached its all-time peak in 1996 with 55 births ranking #390. Since 1996, the popularity has decreased by 29.1%. In 2005, approximately 1 in every 7,934 boys born was named Dewi. RISING Recent data shows the name is currently rising.