Dewi is a distinctive boys' name in England & Wales, ranking #590 in 2004 with 41 recorded births. The name reached its all-time peak in 1996 with 55 births ranking #390. Since 1996, the popularity has decreased by 25.5%. In 2004, approximately 1 in every 7,524 boys born was named Dewi. RISING Recent data shows the name is currently rising.