Sanjabad-e Shomali Rural District (Persian: دهستان سنجبد شمالی) is in the Central District of Kowsar County, Ardabil province, Iran. Its capital is the village of Khalfehlu.

At the census of 2006, its population was 5,182 in 1,039 households. There were 4,765 inhabitants in 1,177 households at the following census of 2011. In the most recent census of 2016, the population of the rural district was 3,517 in 960 households. The most populous of its 27 villages was Karandaq, with 502 people.