呵叻高原也称呵叻盆地，位于泰国东北部依善地区。西有碧差汶山脉和栋帕耶费山，南有山甘烹山脉及扁担山脉，东北部有普潘山脉。平均海拔200米，面积15.5万平方公里。主要河流有蒙河及栖河。

由于高山形成雨影，高原雨量比湄南河流域少三分之一，土地变得不宜种植水稻。

The Khorat Plateau also "Korat Plateau", is a plateau in the northeastern Isan region of Thailand. The plateau forms a natural region, named after the short form of Nakhon Ratchasima, a historical barrier controlling access to and from the area.