Dewi is a distinctive boys' name in England & Wales, ranking #528 in 1997 with 34 recorded births. The name reached its all-time peak in 1996 with 55 births ranking #390. Since 1996, the popularity has decreased by 38.2%. In 1997, approximately 1 in every 9,248 boys born was named Dewi. RISING Recent data shows the name is currently rising.