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 Channel (international) Hallmark Channel (Australia) Hallmark Channel (Italy) Hallmark Channel (UK) 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 Halcyon Studios, a Hallmark Channel stakeholder 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