Ilarion ( Bulgarian: Иларион, Serbian: Иларион, Russian: Иларион, Ukrainian: Іларіон) is a variant of the Greek given name Hilarion, found in Slavic and Romanian languages. It may refer to:

• Hilarion of Kiev or Ilarion (11th century), Metropolitan of Kiev
• Ilarion Buiuc (1891–1918), Bessarabian politician
• Ilarion Roganović (1828–1882), Bishop of Cetinje and Metropolitan of Montenegro and the Highlands
• Ilarion Ciobanu (1931–2008), Romanian actor
• Ilarion Felea (1903–1961), Romanian Orthodox priest and theologian
• Ilarion Ionescu-Galați (born 1937), Romanian violinist and orchestra conductor
• Hilarion of Makariopolis or Ilarion (1812–1875), Bulgarian cleric
• Ilarion Ruvarac (1832–1905), Serbian historian and Orthodox priest
• Ilarion Ohienko, Metropolitan Ilarion (1882–1972), Ukrainian Orthodox cleric, linguist, and historian
• Ilarion Dragostinov (1852–1876), Bulgarian revolutionary
• Ilarion Hrabovych (1856–1903), Ukrainian poet
• Ilarion Radonić (1871–1932), Bishop of the Serbian Orthodox Church

Name list

This page or section lists people that share the same given name.
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• All pages with titles beginning with Ilarion
• Illarion (name)
• Hilario (name)
• Hilarion (name)
• Hilary (name)
• Ilarion Ridge, Antarctica