Sir (; Assyrian Neo-Aramaic: Seiri) is a mountainous area and village in Baranduz Rural District, in the Central District of Urmia County, West Azerbaijan Province, Iran. At the 2006 census, its population was 134 people, in 32 families. In English the place has been subject to various spellings due to early transliteration including Seer, Seyr, and Seir.
Sir is located the historically significant stone church of Mar Sargis, a shrine visited by the faithfuls for healing, both Christian and Muslim. Due to its fresh mountain air, Sir historically became the summer station for many European and American missionaries based in Urmia.
On 1800s a proto-evangelical English missionary led by Sir John White and Elisabeth Hobart also built a massive worship place in Urmia, known as 'Ojag-e Sir' (Sir's Henge, God's House of Sir) later renamed and converted to Kelisay-e Hazrat-e Maryam (the Church of Saint Mary). There is a remaining room of mentioned sacred address which is located in the close outskirts of Janveslou village, foothill of Sir's Mountain. The village was colloquially named Janveslou meaning the village of John and Elisa and is widely known to have historically offered safety to various displaced and persecuted peoples of faith. It is there that many missionaries and their household-members are buried in the area, such as Joseph Plumb Cochran (1855âÂÂ1905).