M-149 is a 10.605-mile (17.07 km) north–south state trunkline highway in the Upper Peninsula of the US state of Michigan. It connects US Highway 2 (US 2) in Thompson with the Palms Book and Indian Lake state parks. The highway was originally designed in the 1930s and extended a few years later. The last major changes to the highway were made in the 1960s when it was completely paved for the first time.