Dewi is a distinctive boys' name in England & Wales, ranking #907 in 2011 with 32 recorded births. The name reached its all-time peak in 1996 with 55 births ranking #390. Since 1996, the popularity has decreased by 41.8%. In 2011, approximately 1 in every 10,807 boys born was named Dewi. RISING Recent data shows the name is currently rising.