Portland is a common name for a city or town that is adjacent to water, and may refer to any of the following locations:
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United States
- Portland, Arkansas, a city of 552, in the Crossett graticule
- Portland, Colorado, a defunct city
- Portland, Connecticut, a city of 8,732, near Hartford
- Portland, a former name for Blue Island, Illinois, a city of 23,463
- Portland, a former name for Fountain, Indiana
- Portland, Indiana, a city of 6,437, in the Lima, Ohio
- Portland, Louisville, a neighborhood and former town in Louisville, Kentucky
- Portland, Maine, a city of 64,249
- New Portland, Maine, a city of 782, in the Lewiston, Maine graticule
- South Portland, Maine, a city of 23,324 adjoining Portland, Maine
- Portland, Michigan, a city of 3,789, in the Lansing graticule
- Portland, New York, a city of 5,502, in the Dunkirk graticule
- Portland, North Dakota, a city of 604, in the Mayville graticule
- Portland, Ohio, an unincorporated community in the Racine graticule
- Portland, Oregon, a city of 537,081 (2006)
- Portland, Pennsylvania, a city of 579, in the Allentown graticule
- Portland, Tennessee, a city of 8,458, in the Nashville graticule
- Portland, Texas, a city of 16,420, near Corpus Cristi
- Portland, Dodge County, Wisconsin, a city of 1,106, in the Fond du Lac graticule
- Portland, Monroe County, Wisconsin, a city of 686, in the Viroqua graticule
Australia
- Portland, New South Wales, a small town with a cement works, in the Bathurst, New South Wales, Australia graticule
- Cape Portland, Tasmania, a cape on the north-eastern tip of Tasmania, in the -40,147 graticule
- Portland, Victoria, a small regional city and port of 12,000 people.
Canada
- Portland Estates, Nova Scotia, an area of Halifax
- Portland, Ontario, a small town north of Kingston, Ontario on Big Rideau Lake
- Port Lands (also known as Portlands), the eastern part of the Toronto waterfront
China, People's Republic of
- Portland Street, a prostitution district in Hong Kong
Jamaica
- Portland, Jamaica, a parish on Jamaica's north-east coast
- Portland Point, Jamaica's southernmost point
New Zealand
- Portland, Northland, a small town south of Whangarei
- Portland Island, New Zealand, a small island off the Mahia Peninsula
United Kingdom
- Borough of Weymouth and Portland, a local government district of Dorset, including the Isle of Portland
- Great Portland Street, a street in the West End of London
- The Isle of Portland, a peninsula on the coast of Dorset, the origin of most other meanings
- Portland Bill, the headland at the tip of the Isle of Portland
- Portland College, an education establishment in the county of Nottinghamshire
- Portland Gallery, an art gallery in Westminster, London
- Portland Harbour, a large man-made harbour between the Isle of Portland and the mainland
- Portland House, a tall building in Westminster, London
- Portland Place, a street in the Marylebone district of central London
- Portland Square, Bristol, a Georgian square in the city of Bristol
- Portland Tower, a tower block in Manchester