Krasny Sulin () is a town and the administrative center of Krasnosulinsky District in Rostov Oblast, Russia, located in the Donets Basin region. Population:
Within the framework of administrative divisions, Krasny Sulin serves as the administrative center of Krasnosulinsky District. As an administrative division, it is incorporated within Krasnosulinsky District as Krasnosulinskoye Urban Settlement. As a municipal division, this administrative unit also has urban settlement status and is a part of Krasnosulinsky Municipal District.