Dennys is a distinctive boys' name in United States, ranking #3616 in 1998 with 20 recorded births. The name reached its all-time peak in 1998 with 20 births ranking #3616. Since 1996, the popularity has increased by 66.7%. In 1998, approximately 1 in every 95,566 boys born was named Dennys. FALLING Recent data shows the name is currently falling.