Tokachi Plain () is a plain facing the Pacific Ocean, located in the southeastern part of Hokkaido. The area of the plain is approximately 3600km.
Matsuura Takeshirà  invented the name "Tokachi" based on the Ainu word tokapci (ãÂÂã«ã·ãÂÂãÂÂ), meaning a breast, possibly referring to a breast-shaped hill.