Dennys is a distinctive boys' name in United States, ranking #5491 in 2007 with 16 recorded births. The name reached its all-time peak in 1998 with 20 births ranking #3616. Since 1996, the popularity has increased by 33.3%. In 2007, approximately 1 in every 129,702 boys born was named Dennys. FALLING Recent data shows the name is currently falling.