Oleg Kalugin | Oleg Gazmanov | Oleg Mityaev | Oleg Kagan | Oleg Deripaska | Oleg Menshikov | Oleg Maisenberg | Oleg Kulik | Oleg Caetani | Oleg Yefremov | Oleg Strizhenov | Oleg Grabar | Oleg Goncharenko | Oleg Firsov | Oleg Vyugin | Oleg Timchenko | Oleg Tabakov | Oleg Pungin | Oleg Popov | Oleg Ostapenko | Oleg Maslennikov | Oleg Malov | Oleg Litvinenko | Oleg Khlevniuk | Oleg Kashin | Oleg I of Ryazan | Oleg Igorevich Marichev | Oleg Gordievsky | Oleg D. Jefimenko | Oleg Aleksandrovich Smirnov |
Rob Conway's fourth reign, Chet the Jett's second reign, and Vladimir Kozlov's only reign are all tied for the record of shortest reign in the title's history at less than one day each.