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Worldwide, ארנולדי (Arnoldi , ארנולדי ) is a rare largely boy's, but infrequently female given name. The first name ארנולדי is habitual in Georgia, where it is quite a rare male name, Italy, where it is a rare dominantly masculine, but seldom girly name, and Tanzania, where it is a very rare boy's name. In absolute terms, it most frequently occurs in Italy, Georgia, and Indonesia. More prevalently, ארנולדי is the last name as well as the forename.
ארנולדי is also a name for the fictitious and mythical characters: .