Roi Et is one of the provinces (changwat) of Thailand, located in the North-East of Thailand. Neighboring Provinces are (from north clockwise) Kalasin, Mukdahan, Yasothon, Sisaket, Surin and Maha Sarakham.
The name Roi Et translates to 101, which refers to the original 11 satellite cities around the main city as well as the 11 city gates. To express the importance of the city the number was exaggerated.