Isidore, also spelled Isador, Isadore and Isidor) is an English and French masculine given name. The name is derived from the Greek name Isídor - Isídōros (Ἰσίδωρος) and can literally be translated to "gift of Isi." The name has survived in various forms throughout the centuries. Although it has never been a common name, it has historically been popular due to its association with Catholic figures and among the Jewish diaspora. Isidora is the feminine form of the name.
