Pak Chong (Thai: ปากช่อง, pronounced [pàːk t͡ɕʰɔ̂ŋ]) is the westernmost district (amphoe) of Nakhon Ratchasima province, northeastern Thailand, and the main point of entry into Isan as the main road and rail lines cross the Dong Phaya Yen Mountains into the region. It is a popular tourist destination, especially among weekenders from Bangkok, and is home to many resorts and touristy attractions, in addition to the main entrance into Khao Yai National Park.