Highway 222[1] is a highway of northeastern Thailand. It begins at Phang Khon in Sakhon Nakhon Province at 17.3889°N 103.7214°W, where it meets Highway 227 and Highway 22 and ends near the Mekong River on the Lao border in the north at Bueng Kan in Bueng Kan Province at 18.3608°N 103.6464°W, where it joins Highway 212.[2]