Over the past 110 years, 15 443 boys and 147 girls have been named Denis. The name Denis ranks 792th in the United States among the most common names for boys. For the first time more than ten times newborns were named Denis in 1912. The peak of popularity of the name Denis came in the 1940s and 1950s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.