Dorchester may refer to:
Geography
- England
- Dorchester, Dorset, the traditional county town of Dorset; central to the organisation of the emigration of Puritans to North America during the 17th century
- Dorchester, Oxfordshire, also known as Dorchester-on-Thames
- Canada
- United States
Business
Military
People
Religion
Structures
Transportation
- Dorchester Boulevard, a thoroughfare located in Westmount, Quebec, and formerly in Montreal where it has been renamed René-Lévesque Boulevard
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