M
- Mad River Glen
- Mad River Mountain
- Magic Mountain
- Magic Mountain Ski Area
- Mammoth Mountain Ski Area
- Maple Ski Ridge
- Marquette Mountain
- Massanutten
- Maverick Mountain
- McCauley Mountain Ski Center
- Meadowlark Ski Lodge
- Mission Ridge
- Mohawk Mountain
- Monarch Mountain
- Montana Snowbowl
- Moonlight Basin
- Mountain Creek Resort
- Mountain High
- Mount Bohemia
- Mount Brighton
- Mount Holly
- Mount Kato Ski Area
- Mount La Crosse
- Mount Peter
- Mount Pleasant Of Edinboro
- Mount Ripley
- Mount Shasta Board & Ski Park
- Mount Snow
- Mount Southington Ski Area
- Mount Sunapee
- Mt. Abram Ski Resort
- Mt. Ashland
- Mt. Bachelor
- Mt. Baker
- Mt. Baldy
- Mt. Crescent Ski Area
- Mt. Holiday Ski Area
- Mt. Hood Meadows
- Mt. Hood Ski Bowl
- Mt. Jefferson
- Mt. Rose - Ski Tahoe
- Mt. Spokane Ski and Snowboard Park
- Mulligan's Hollow Ski Bowl