Pre-modern era
:''Ordered chronologically''Religious figures
* Isidorus (2nd century AD), pagan Egyptian priest * Isidore, son of Basilides, the Egyptian Christian Gnostic (2nd century AD) * Isidore of Chios (died 251), Roman Christian martyr * Isidore of Scetes (died c. 390), 4th-century Egyptian Christian priest and desert ascetic * Isidore of Alexandria (died 403), Egyptian Christian priest, saint * Isidore of Pelusium (died c. 449), Egyptian monk, saint and prolific letter writer *Others
* Isidore of Charax (fl. 1st century), Greek geographer * Isidore of Alexandria (died c. 520), Greco-Egyptian philosopher * Isidore of Miletus, Greek architect who co-designed the Hagia Sophia in Constantinople from 532 to 537 * Isidore (inventor), according to legend the Russian Orthodox monk erroneously credited with producing the first genuine recipe of Russian vodka, c. 1430Modern world
:''Ordered alphabetically by last name'' * Isidore Gordon Ascher (1835–1933), British-Canadian novelist and poet * Isidor Bajic (1878–1915), Serbian composer, pedagogue and publisher * Isidore Bakanja (c. 1885–1909), beatified martyr in the Belgium Congo * Isidor George Beaver (1859–1934), British-born Australian architect * Isadore Coop (1926-2003), Canadian architect * Isador Coriat (1875–1943), American psychiatrist and neurologist * Ivor Cutler (born Isadore; 1923–2006), Scottish poet, songwriter and humorist * Isidore Ducasse (1846-1870), French poet best known under the nom de plume of Comte de Lautréamont * Isidor Izzy Einstein (1880–1938), American federal police officer during the Prohibition era * Isidor Fisch (1905–1934), German associate of Bruno Hauptmann * Isadore Friz Freleng (1906–1995), American cartoonist * Isidore Goldblum (1863–1925), Polish Hebrew writer and bibliographer * Isador Goodman (1909–1982), South African-Australian musician and composer * Isidor Gunsberg (1854–1930), Hungarian chess player * Isidore Itzkowitz (1892–1964), better known as Eddie Cantor, American performer and comedian * Isadore Gilbert Jeffery (1840-1919), American poet, lyricist * Isidor Kaufmann (1853–1921), Austro-Hungarian painter of Jewish themes * Izidor Kürschner (1885–1941), Hungarian football player and coach * Isadore Gilbert Mudge (1875–1957), American librarian * Isidore Newman (fl. 1903), founder of the Isidore Newman School * Isidor Philipp (1863–1958), Hungarian-French pianist, composer and pedagogue * Isidor Isaac Rabi (1898–1988), Galician-born American physicist and Nobel laureate * Maximilien François Marie Isidore de Robespierre (1758-1794), French lawyer and revolutionary * Isidor Rosenthal (1836–1915), German physiologist * Isadore Singer (1924-2021), American mathematician * Isador Sobel (1858–1939), American lawyer * Isidore Spielmann (1854–1925), British art critic and exhibition organizer * I. F. Stone (1907–1989), American investigative journalist * Isidor Straus (1845–1912), co-owner of Macy's, drowned in the sinking of RMS ''Titanic'' * Isador Samuel Turover (1892–1978), Belgian-American chess master * Chief Isadore (fl. 1860s), leader of the Ktunaxa/Kootenay people in the Tobacco Plains War * Isidor Burakh a fictional character from the video game "Pathologic Classic" (2005),"Pathologic Classic HD" (2015) and "Pathologic 2" {{given name Theophoric names English masculine given names Masculine given names French masculine given names