Clarion may refer to:
Music
Clarion (instrument), a type of trumpet used in the Middle Ages
Clarion (accessible musical instrument), for disabled musicians
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
Places
Mexico
Clarion Island (Isla Clarión), Colima
United Kingdom
Whitefield School, a school in London renamed Clarion School in 2025
United States
Clarion, Illinois
Clarion, Iowa
Clarion, Michigan
Clarion, Utah, a ghost town settled as a Jewish farming colony
Pennsylvania
Clarion County, Pennsylvania
Clarion, Pennsylvania, a borough in and the county seat of Clarion County
Clarion Township, Clarion County, Pennsylvania
Clarion River, Pennsylvania, a tributary of the Allegheny River
Clarion University of Pennsylvania, a public university located in Clarion, Pennsylvania
Publishing
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 HarperCollins
The Clarion (Canadian newspaper), the Canadian newspaper started by Carrie Best in 1946
DU Clarion, university newspaper of the University of Denver
Computing
CLARION (cognitive architecture)
Clarion (programming language)
CLARiiON, an EMC disk array
Animals
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
Companies and organizations
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
Other uses
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