Uzun Tappeh-ye Sofla () is a village in Eslamabad Rural District of Eslamabad District in Parsabad County, Ardabil province, Iran.
households, when it was in Qeshlaq-e Shomali Rural District of the Central District. The following census in 2011 counted 633 people in 168 households. The 2016 census measured the population of the village as 583 people in 165 households, by which time the village had been separated from the district in the formation of Eslamabad District. Uzun Tappeh-ye Sofla was transferred to Eslamabad Rural District created in the new district.