Markham is an unincorporated community in Colvin Township, Saint Louis County, Minnesota, United States.

The Whiteface Reservoir and the Cloquet Valley State Forest in Saint Louis County are both located near Markham.

Residents obtain mail service from the neighboring community of Makinen, ZIP code 55763.

Markham's southern border is located 23 miles north of Island Lake on County Road 4 (Governor Rudy Perpich Memorial Drive); and Markham's northern border is County Road 16 (Townline Road), CR 16 serves as a direct east–west route in northeast Minnesota between U.S. Highway 53 and Silver Bay.

A post office called Markham was established in 1908, and remained in operation until 1922.