Ioan

Ioan is a variation on the name John found in Aromanian, Romanian, Bulgarian, Russian, Welsh, and Sardinian. It is usually masculine. The female equivalent in Romanian and Bulgarian is Ioana. In Russia, the name Ioann is usually reserved for the clergy (when a person called Ivan becomes a priest or a monk, he becomes known as Ioann).

Aromanian

 * Ioan Nicolidi of Pindus, physician and noble

Romanian

 * Ioan-Aurel Pop, historian
 * Ioan Alexandru, poet
 * Ioan Andone, footballer and coach
 * Ioan Apostol, luger
 * Ioan Baba, poet
 * Ioan A. Bassarabescu, writer and politician
 * Ioan Teodor Callimachi, Prince of Moldavia
 * Ioan Cantacuzino, microbiologist
 * Ioan Gheorghe Caragea, Prince of Wallachia
 * Ioan Carlaonț, World War II general
 * Ioan Mihai Cochinescu, novelist
 * Ioan Condruc, footballer
 * Ioan P. Culianu, historian and philosopher
 * Ioan Dumitrache, World War II general
 * Ioan Fiscuteanu, actor
 * Ioan Florariu, rower
 * Ioan Flueraș, politician
 * Ioan Gherghel, swimmer
 * Ioan Iacob Heraclid, Prince of Moldavia
 * Ioan Holender, opera administrator
 * Ioan Hora, footballer
 * Ioan Hristea, World War II officer
 * Ioan Igna, football referee
 * Ioan Lupaș, historian and politician
 * Ioan Lupescu, footballer
 * Ioan Manu, politician
 * I. C. Massim, linguist, founding member of the Romanian Academy
 * Ioan Mirea, artist
 * Ioan T. Morar, journalist
 * Ioan Pălăghiță, World War II officer
 * Ioan Gyuri Pascu, musician
 * Ioan Mircea Pașcu, politician
 * Ioan Popovici-Bănățeanul, writer
 * Ioan Potcoavă, Hetman of Ukrainian Cossacks
 * Ioan Pușcaș, gastroenterologist
 * Ioan Mihail Racoviță, World War II general
 * Ioan Rășcanu, World War I general, politician
 * Ioan Sabău, footballer and coach
 * Ioan Sauca, Orthodox priest, theologian, and Secretary general of the World Council of Churches
 * Ioan Simu, priest and politician
 * Ioan Slavici, writer and journalist
 * Ioan Sterca-Șuluțiu, Austrian noble
 * Ioan Sturdza, Prince of Moldavia
 * Ioan Silviu Suciu, gymnast
 * Ioan Talpeș, army general and military historian
 * Ioan Tănăsescu, chemist
 * Ioan Tănăsescu, surgeon
 * Ioan Ţepelea, scientist
 * Ioan Vodă cel Cumplit, Prince of Moldavia

Bulgarian

 * Ioan Vladislav, Bulgarian emperor (1015–1018)
 * Ioan Asen I, Bulgarian emperor (1189–1196)
 * Kaloyan, Bulgarian emperor (1197–1207)
 * Ioan Asen II, Bulgarian emperor (1218–1241)
 * Ioan II, Bulgarian emperor (1298-1299)
 * Ioan Rilski, 9th-century Bulgarian Orthodox hermit and patron saint of Bulgaria
 * Ioan Debarski, 11th-century Bulgarian clergyman and last Patriarch of the First Bulgarian Empire
 * Ioan Exarch, 9th-century Bulgarian scholar, writer and translator
 * Ioan Kukuzel, 14th-century Byzantine composer and singer, from Bulgarian descent
 * Yoan Leviev, Bulgarian artist, painter, and creator of monumental artworks

In all Bulgarian versions of the Bible Ioan is the name used for individuals known as John in English translations, such as John the Evangelist and John the Baptist.

Welsh
In all Welsh versions of the Bible Ioan is the name used for individuals known as John in English translations, such as John the Evangelist and John the Baptist.

Welsh people called Ioan include:
 * Ioan Bowen Rees, poet and mountaineer
 * Ioan Cunningham, rugby coach and former player
 * Ioan Davies, rugby player
 * Ioan Evans (politician), politician
 * Ioan Gruffudd, actor
 * Ioan Lloyd, rugby player
 * Ioan Nicholas, rugby player
 * Ioan Tegid (John Jones), poet

English

 * Ioan James, mathematician
 * Ioan Grillo, journalist