'''Russian Ecclesiastical Mission in Urmia''' (''Русская духовная миссия в Урмии'', '''Orthodox Mission in Urmia''', ''Урмийская духовная миссия'') was [[orthodox mission ]] of the [[Russian Orthodox Church]] for [[w:assyrians|assyrians]] who converted from [[nestorianism]] in 1898, who lived in the border with the Russia in Persian Azerbaijan province. Formally, the mission covers only twenty years - from 1898 to 1918, but the period prior to its establishment, lasted almost the entire second half of the XIX century.