M-218 was a state trunkline highway in the US state of Michigan that served as a connector route from Interstate 96 (I-96, originally US Highway 16, US 16) in Wixom through Oakland County's lake country area to Business US 10 (Bus.

M-218 was originally designated by 1936 and extended into Pontiac in 1938.

[2][5] When M-218 was first introduced into the State Trunkline System by 1936, it served as a connector between M-58 in Pontiac and US 16 in West Novi.

[1] In 1938, the route was extended into Pontiac where it terminated at US 10.

[2][3] The entire highway was in Oakland County.