Other Uses
- Battle of Portland, a sea battle off the Isle of Portland in 1653 during the First Anglo-Dutch War
- Battle of Portland Harbor, a naval battle near Portland, Maine in 1863 during the American Civil War
- Portland (film), a 1996 Danish film
- Portland (sheep), an ancient breed of sheep from the Isle of Portland
- Portland cement, the type of cement used for most mortar and concrete
- Portland Club (London), a club in London, the recognized authority on the games of whist and bridge
- Portland Club (Portland, Maine), a club in Portland, Maine
- Portland Gale, a storm off New England in 1898
- Portland Hoffa, an American comedian
- Portland Island, a fictional island in Liberty City in the video game Grand Theft Auto
- Portland Orange, a color of light emitted by the don't walk phase of pedestrian crossing signals in North America
- Portland Project, an initiative to encourage the use of Linux on desktop computers
- Portland Spurge (Euphorbia portlandica), plant belonging to the family Euphorbiaceae.
- Portland stone, limestone from the Isle of Portland
- Portland Vase, a Roman antique exhibited at the British Galleries
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