Alvars Rural District (Persian: دهستان الوارس) is in the Central District of Sareyn County, Ardabil province, Iran. Its capital is the village of Aldashin.

In July 2009, the former Sareyn District was separated from Ardabil County in the establishment of Sareyn County, which was divided into two districts of two rural districts each, with Sareyn as its capital and only city.

There were 4,672 inhabitants in 1,296 households at the following census of 2011. In the most recent census of 2016, the population was 4,021 in 1,163 households. The most populous of its seven villages was Alvars, with 808 people.