Longhorn may refer to:
Animals
English Longhorn, a traditional long-horned brown and white breed of cattle
Texas Longhorn, a breed of cattle
Highland cattle, a Scottish breed sometimes called Highland Longhorn
Longhorn beetle, a family of beetles with very long antennae
In the US state of Texas
Longhorn, Texas, a community
Longhorn Dam, on the Colorado River in Austin
Texas Longhorns, sports teams and organizations at the University of Texas at Austin Longhorn, the mascot (a Texas Longhorn bull) of J. Frank Dobie High School, Houston Longhorn, A candy of chocolate, pecans, and caramel made by Lammes Candy Longhorn Railway Company
Technology
Windows Longhorn, the pre-release internal Microsoft codename of the Windows Vista Longhorn Server, the original codename of Windows Server 2008 Okapi Longhorn, a batch processing server in Okapi Framework
Fictional characters
Longhorn, a fictional character on the animated television show Freakazoid! Longhorn (Transformers), one of several characters in the various "Transformers" fictional universes
Music
Jay's Longhorn Bar, a former music venue in Minneapolis commonly known as "The Longhorn" "Longhorn", a piece of music used as the entrance theme for John Bradshaw Layfield, composed by Jim Johnston