Dewi is a distinctive boys' name in England & Wales, ranking #519 in 1998 with 37 recorded births. The name reached its all-time peak in 1996 with 55 births ranking #390. Since 1996, the popularity has decreased by 32.7%. In 1998, approximately 1 in every 8,391 boys born was named Dewi. RISING Recent data shows the name is currently rising.