In the world, جک (Jack 
, Jug 
, جک 
) is a widespread masculine first name. The first name جک is characteristic of Macao, where it is a common masculine name, Ireland, and Hong Kong (explore the name in all countries). Measured by absolute frequency, the name is most common in the United States, the United Kingdom, and Indonesia. Very seldom, جک is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Jack | United Kingdom, Myanmar, Indonesia, United States, China |
| Jug | United Kingdom, Australia, Indonesia, Canada, United States |
| جک | Iran |
Cek, 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, John,
جک 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.