All over the world, Джэк (Jack 
, Джэк 
) is a widespread masculine first name. The first name Джэк is characteristic of Macao, where it is a common boy's name, Ireland, and Hong Kong (explore the name in all countries). Not in comparison with a country's population, it is commonest in the United States, the United Kingdom, and Indonesia. Much less frequently, Джэк is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Jack | Indonesia, China, United Kingdom, United States, Myanmar |
| Джэк | Russia |
Cek, Djek, Džons, Evan, Gian, Gianni, Giannis, Giovan, Giovanni, Giuàn, Hannes, Hanns, Hans, Honsa, Honza, Huans, Ian, Ianka, Ieuan, Ifan, Ioan, Ioann, Ioannes, Ioannis, Ion, Ivan, Ivano, Ivans, Ivashka, Iván, Iwan, Jaan, Jach, Jacky, Jacob, Jan, Janka, Janos, Jean, Jehan, Jhoao, Joan, Joannes, Joao, Jogvan, Johan, Johann, Johannes, Johannès, Johano,
Джэк is also a prevalent name for the fictitious and mythical characters: Jack Bauer , the character from the television series 24; Jack Reacher , the fictional character, Jack Reacher; Captain Jack Sparrow , the fictional character and the protagonist of the Pirates of the Caribbean film series, Pirates of the Caribbean: On Stranger Tides; Jack Harkness , the fictional character of Doctor Who and Torchwood and Jack O'Neill , the fictional character from the Stargate universe, and in many other works.