The Rostov constituency (No.149[a]) is a Russian legislative constituency in Rostov Oblast.

The constituency stretches from eastern Rostov-on-Don to southern Rostov Oblast.

Until 2007 the constituency was more compact and was actually based in western Rostov-on-Don, however, after 2015 redistricting territory of the former Rostov constituency was placed into Nizhnedonskoy constituency, while new Rostov constituency was created from parts of Proletarsky and Belaya Kalitva constituencies.