Throughout the world, Денни (Denny 
, Denni , Dennie , along with others...) is a widespread primarily boy's, but very infrequently girly first name. The given name Денни is habitual in Indonesia, where it is quite a common predominantly masculine, but very seldom girly name, the Dominican Republic, where it is quite a common epicene name, and Antigua and Barbuda, where it is quite a common boy's name. In absolute terms, this name is the most popular in Indonesia, the United States, and the Dominican Republic. Very seldom, Денни is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Dennie, Denny, Denni | United Kingdom, Indonesia, Venezuela, United States, India |
| Denney | United Kingdom, Venezuela, Canada, United States, India |
| Денни | Kyrgyzstan, Russia |
Danny, Denez, Denis, Deniss, Denne, Dennis, Dennys, Denys, Denís, Dionigi, Dionisio, Dionisios, Dionizij, Dionizy, Dionyses, Dionysios, Dionysis, Dionysius, Dionysus, Dionís, Dyenni, Dzianis, Dzyanis, Διονύσης, Διονύσιος, Дени, Денис, Деннис, Денні, Денька, Деня, Дені, Деніс, Дзяніс, Диня, Дионизий, Дионис, Дионисий, Дионисио, Дионисиос, Дионисиус, Дэн, Дэнис, Дэннис, Діонісій, דיוניסיוס, דיוניסיס, דניס, دنس, دنيس,
Денни is also a popular name for the fictitious and mythical characters: Spirit , the fictional character; Dennis Creevey , the character from Harry Potter, Harry Potter and the Order of the Phoenix; Dennis "Cutty" Wise , the character from The Wire; Dennis Monroe Parker , character in Alien and Denny Duquette , the fictional character from the television series Grey's Anatomy, and in many other works.