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Family name Déjeuner (Dejun
, Dejuna
, Déjeuner
) , worldwide, is a rare cognomen. The family name Déjeuner is characteristic of Singapore, where it is a rare surname, Australia, where it is a very rare surname, and Yemen. Not in comparison with a country's population, the name is most common in China, Australia, and Singapore. Much more frequently, Déjeuner is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dejun | Philippines, Taiwan, Australia, United States, China |
| Dejuna | Brazil, United States, Philippines |
| Déjeuner | France |