Worldwide, ジャック (Jacques 
, Jack , Jacque , and others...) is a prevalent masculine first name. The first name ジャック is habitual in France, where it is a widespread masculine name, Macao, where it is a common male name, and Canada (explore the name in all countries). Not in comparison with a country's population, the name is most common in France, the United States, and the Democratic Republic of the Congo. Much less frequently, ジャック is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Jacque, Jacques, Jaques, Jac, Jack | United Kingdom, United States, Canada, France, Democratic Republic of the Congo |
| Jaque | United Kingdom, South Africa, Cameroon, United States, France |
| ジャック | Japan |
Cek, Chaime, Diego, Džeimss, Džons, Evan, Fromental, Giacomo, Gian, Gianni, Giannis, Giovan, Giovanni, Giuàn, Hannes, Hanns, Hans, Hijack, Honsa, Honza, Huans, Iacobus, Iacopo, Ian, Ianka, Ieuan, Ifan, Ioan, Ioann, Ioannes, Ioannis, Ion, Ivan, Ivano, Ivans, Ivashka, Iván, Iwan, Jaakko, Jaan, Jacb, Jacco, Jach, Jacky, Jaco, Jacob, Jacobo, Jacobus, Jacopo, Jacq,
ジャック 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.
| ジャック白井 Japanese military personnel, JP (b. 1900) |
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| ジャック滋野 Japanese jazz pianist (1922-1989), JP (b. 1922) |
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| ジャック 坂崎 JP (b. 1946) |
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| ホルコム ジャック和馬 Japanese announcer (1993-), JP (b. 1993) |
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