Gach Sar (Persian: گچسر, also Romanized as Gach-i-Sar and Getschesar) is a village in Nesa Rural District, Asara District, Karaj County, Alborz Province, Iran. At the 2006 census, its population was 133, in 35 families. Located on the main road from Tehran to Chalus on the Caspian coast, 7 km south of the Kandavan Tunnel, Gach Sar has farmlands irrigated by the Karaj River, producing fruits, as well as plants for animal fodder.
|Time zone||UTC+3:30 (IRST)|
|• Summer (DST)||UTC+4:30 (IRDT)|
- Gach Sar can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3063199" in the "Unique Feature Id" form, and clicking on "Search Database".
- "Census of the Islamic Republic of Iran, 1385 (2006)" (Excel). Statistical Center of Iran. Archived from the original on 2011-11-11.
- Nehzad, Minu Yusof. "GAČSAR)". Encyclopaedia Iranica. Retrieved 25 May 2020.