Dennys is a distinctive boys' name in United States, ranking #5146 in 2009 with 18 recorded births. The name reached its all-time peak in 1998 with 20 births ranking #3616. Since 1996, the popularity has increased by 50.0%. In 2009, approximately 1 in every 110,184 boys born was named Dennys. FALLING Recent data shows the name is currently falling.