Across the world, ジョアン (Joan 
, Joanne , João 
, among others...) is a prevalent largely girly, but seldom boy's given name. The first name ジョアン is characteristic of Portugal, where it is a common boy's name, Guam, where it is a common feminine name, and Andorra, where it is a common principally male, but very seldom girly name (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in the United States, Philippines, and the United Kingdom. Much less frequently, ジョアン is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Joann, Joanne, Joan | Portugal, United Kingdom, Spain, Philippines, United States |
| João | Portugal, Spain, Angola, Kenya, United States |
| ジョアン | Japan |
Dzhoan, Džons, Evan, Gian, Gianni, Giannis, Gioan, Giovan, Giovanni, Giuàn, Hannelis, Hannelore, Hannes, Hannie, Hanns, Hans, Honsa, Honza, Huans, Ian, Ianka, Ieuan, Ifan, Ioan, Ioann, Ioanna, Ioannes, Ioannis, Iohanna, Ion, Ivan, Ivano, Ivans, Ivashka, Ivo, Iván, Iwan, Jaan, Jack, Jan, Janka, Janos, Jean, Jehan, Jhoao, Joam, Joana, Joanes, Joanna, Joannes,
ジョアン is also a prevalent name for the fictitious and mythical characters: Tarzan , the fictional character from Edgar Rice Burroughs's Tarzan of the Apes, Tarzan and the Lion Man; Dr. John Watson , the fictional character of Sherlock Holmes; Barbara Gordon , the DC Comics character, The Lego Batman Movie; Dick Grayson , the one of several fictional characters using the identity Robin, Batman & Robin and Martian Manhunter , the fictional superhero that appears in DC Comics' publications, Smallville, and in many other works.