Ioan is a variation on the name John found in Aromanian, Romanian, Bulgarian, Russian, Welsh (Welsh pronunciation: [ˈjo.an]), and Sardinian.
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).
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.
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.