In 2025, 381 US boys were named Dennis, making it the 707th most common boys’ name of the year, up 2 places from #709 in 2024. That is 5 more than the 376 boys named Dennis in 2024. Its best rank for boys was #16, reached in 1949. The most boys given the name in a single year was 24,552, in 1952. For comparison, it was #494 in 2015 and #17 in 1950.
Social Security card records list Dennis in every one of the 146 years from 1880 to 2025; in 1880 there were 128 babies with the name. In all, 623,692 US babies have been given the name, 0.4% of them girls and 99.5% boys. Its busiest decade was the 1950s, with 204,785 babies named Dennis.
Over the 10 years from 2016 to 2025, 4,516 US boys were named Dennis; the busiest of those years was 2016, with 587. In 2025 that was about 1 in 4,483 of the boys in SSA’s list for the year.
Among the states, Dennis ranked highest in Maryland in 2025, at #370 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Denis (21,606 babies since 1880), Denise (374,789 babies since 1880), Dennise (3,571 babies since 1880) and Deniz (2,122 babies since 1880). Rarer spellings such as Donnis, Dionisio and Denys are summarised on this page. The open nickname list we use links it to Dennie and Denny.
Meaning
Meaning not yet researched.
We publish a meaning only with a cited source and a confidence label, and never generate one. Meanings are being researched for the most common names first.
Wikidata records this spelling as a given name in Dutch and English. That is where the name is used, not necessarily where it comes from.