Wachusett Meadow Wildlife Sanctuary, Protected natural area in Princeton, Massachusetts, United States.

Wachusett Meadow Wildlife Sanctuary is a 1,135-acre Massachusetts Audubon Society sanctuary in Princeton, Massachusetts, formed from a former farmstead. Its woodlands, wetlands and meadows are crossed by 12 miles of trails, and a large pond offers canoe rentals in season. The Midstate Trail passes through the property.

Charles T. Crocker III donated 600 acres of the former farmstead, with its buildings, to the Massachusetts Audubon Society in 1956. Some of the historic farm buildings remain in use, including for education and training programs. The sanctuary now covers 1,135 acres.

The name comes from the Wachusett range, and the sanctuary keeps the shape of the former Crocker farm: fields, stone walls and a farmstead now holding the nature center. Year-round programs for preschoolers to adults, a summer day camp and seasonal events such as guided walks use the property as an outdoor classroom.

The property has over 12 miles of trails open from sunrise to sunset, ranging in difficulty for different abilities. It helps to wear comfortable hiking shoes and be ready for changing weather, since the paths cross open fields and wet areas.

The Midstate Trail, a long-distance hiking route across Massachusetts, passes directly through the sanctuary, so visitors can walk a section of it here. The sanctuary is also regarded as one of the best hawk-watching sites in New England.