Sampas Pavilion is an outdoor amphitheater located in the Pawtucketville neighborhood of Lowell, Massachusetts along the Pawtucket Boulevard, 25 miles northwest of Boston, Massachusetts, USA and owned by the state of Massachusetts. The pavilion is located on the banks of the Merrimack River and is part of Lowell Heritage State Park. The seating capacity is approximately 1,000, consisting of general admission lawn seats and additional seating in the back. The venue has been in use since the early 1970s and has been used for events such as musical performances, ethnic festivals, and political rallies.