The Hadwen Arboretum is a 26-acre (11 ha) forest located in the Columbus Park neighborhood of Worcester, Massachusetts. The front entrance is situated on Lovell St. It contains many heritage trees that were originally planted by its caretaker Obadiah Hadwen. The property is owned and maintained by nearby Clark University.
The mid-point of the East-West Trail, a 14-mile (23 km) trek connecting 20 green spaces throughout Worcester, is located in the Hadwen Arboretum. There is also a community garden cared for by the Regional Environmental Council.