The Mount Sugarloaf State Reservation is a state park and recreation area in Deerfield, Massachusetts. It is located just west of the Connecticut River and is best known for its stunning scenery and views.

Featuring the Mount Sugarloaf as its main attraction, the Mount Sugarloaf State Reservation is a part of the bigger Connecticut River Greenway State Park. It offers the North and South portions of the Sugarloaf Mountain ranges as well as 1.75 miles? worth of Connecticut River frontage and two river islands. Some sections of the park, especially those along the river, are used for agricultural research by the University of Massachusetts Amherst.

Visitors of the Mount Sugarloaf State Reservation can enjoy sights on the observation tower found on the South Sugarloaf from late spring through fall. Other outdoor activities that folks can enjoy at the park include skiing, hunting, snowshoeing, kayaking, canoeing, hiking, and biking.