Umaslan-e Sofla () is a village in Ojarud-e Sharqi Rural District of Muran District in Germi County, Ardabil province, Iran.
At the time of the 2006 National Census, the village's population was 92 in 19 households. The following census in 2011 recorded 54 people in 15 households. The 2016 census measured the village's population at 62 people in 20 households.