Avalon is an unincorporated community in southern Livingston County, Missouri, United States. It is located on Missouri Supplemental Route H about one mile east of U.S. Route 65 and ten miles south of Chillicothe.
Avalon was platted in 1869. The community's name is a transfer from Avallon, in France. A post office called Avalon was established in 1872, and remained in operation until 1985.
Coordinates: 39°39′33″N 93°26′30″W / 39.65917°N 93.44167°W