A hallmark is an official stamp of quality on a precious metal.
Hallmark may also refer to:
Companies and institutions
- Hallmark Cards, a greeting card manufacturer based in Kansas City, Missouri
- Hallmark Channel, an American cable television network owned by Crown Media Holdings, a privately owned subsidiary of Hallmark Cards
- Hallmark Connections, a British coach operator
- Hallmark Guitars, an American guitar manufacturer
- Hallmark Institute of Photography, a for-profit school in Turners Falls, Massachusetts, open 1975–2016
- Hallmark Records, a British record label
- Sonar Entertainment, previously known as Hallmark Entertainment
People
- Charlotte Hallmark, Cherokee American politician and chief
- Roger Hallmark (1946–2014), American country singer-songwriter
Other uses
- Hallmark, Louisville, a small neighborhood in western Louisville, Kentucky, USA
- Hallmark-Sonali Bank Loan Scam, a corruption scandal in the Bangladesh
- Hallmark Academy, a home school education in Sanger, California
- Hallmark Building, a historic building in Hollywood, California
- Hall Mark (horse), an Australian racehorse active in the 1930s
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