Clarion may refer to:

Look up clarion in Wiktionary, the free dictionary.

• Clarion (instrument), a type of trumpet used in the Middle Ages
• The register of a clarinet that ranges from B4 to C6
• A trumpet organ stop that usually plays an octave above unison pitch
• "Clarion" (song), a 2008 single by multinational band Guillemots

• Peninsula Clarion, a regional newspaper published in Kenai, Alaska, U.S.
• Clarion Herald, the official newspaper of the Archdiocese of New Orleans in the U.S. state of Louisiana
• Clarion (magazine), a literary magazine published in Boston, Massachusetts, U.S.
• The Clarion-Ledger, a daily newspaper in the U.S. state of Mississippi, and the second oldest company in that state
• Clarion Workshop, a science fiction and fantasy workshop based in San Diego, California, U.S.
• Clarion West Writers Workshop, a science fiction and fantasy workshop based in Seattle, Washington, U.S.
• The Clarion (British newspaper), a defunct weekly socialist newspaper that was published in the United Kingdom
• Western Clarion, a defunct newspaper that served as the official organ of the Socialist Party of Canada from 1903 to 1925
• The Clarion, a defunct quarterly magazine published by the American Folk Art Museum from 1971 until 1992
• Clarion Books, a young adult publishing imprint of Houghton Mifflin Harcourt
• The Clarion (Canadian newspaper), the Canadian newspaper started by Carrie Best in 1946
• DU Clarion, university newspaper of the University of Denver

• CLARION (cognitive architecture)
• Clarion (programming language)
• CLARiiON, an EMC disk array

• Clarion nightsnake (Hypsiglena unaocularis), a small colubrid snake
• Clarion snake eel (Myrichthys pantostigmius), a tropical, marine eel
• Clarión wren (Troglodytes tanneri), a species of bird
• Proud Clarion, an American Thoroughbred racehorse, winner of the 1967 Kentucky Derby
• Clarion angelfish (Holacanthus clarionensis), a species of saltwater angelfish

• Clarion (company), a Japanese automotive and consumer electronics manufacturer
• Clarion Project, a nonprofit organization based in Washington D.C., USA
• Clarion Hotel, a hotel brand in the United States
• Clarion Hotel Limerick, a hotel in Limerick, Ireland
• Clarion Housing Group, a British housing association
• National Clarion Cycling Club, a cycling club with some 29 member sections in the United Kingdom

• Clarion Award, an honor for excellence in communications from the Association for Women in Communications
• Clarion (heraldry), a charge or bearing in heraldry
• Operation Clarion, an extensive Allied campaign of strategic bombing during World War II against Nazi Germany
• Clarion University of Pennsylvania, a university located in Clarion, PA

• Clarin (disambiguation)

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