McKay is an unincorporated community in Umatilla County, Oregon, United States. Its name accompanies McKay Creek, which is named for Dr. William Cameron McKay, located in Umatilla County at North McKay Creek Road (County 1050 Rd.) on Ross Road.
As of the 2020 census, McKay had a population of 95.
It has been the site of discovery of ancient bird fossils.