Klamath may refer to:

• Klamath people, a Native American people of California and Oregon
  • Klamath Tribes, a federally recognized group of tribes in Oregon
• Klamath language, spoken by the Klamath people

• False Klamath, California, a coastal area along U.S. Route 101
• Fort Klamath, a former military outpost in Oregon
• Fort Klamath, Oregon, a present-day unincorporated community near the former fort
• Klamath, California, a census-designated place
• Klamath, California, former name of Johnsons, California
• Klamath Basin, the region in Oregon and California drained by the Klamath River
• Klamath County, California
• Klamath County, Oregon
• Klamath Mountains, in California and Oregon
• Klamath National Forest
• Klamath River, in Oregon and California

• Klamath (microprocessor), a variant of the Pentium II microprocessor
• Klamath, a ferryboat that operated on San Francisco Bay
• Klamath (steamboat), a steamboat that operated on Lower Klamath Lake in the early 20th century
• USS Klamath, a U.S. Navy steamer
• Klamath (train), a Southern Pacific passenger train

• Klamath Hardwoods, now Columbia Forest Products, an American hardwood manufacturer
• Klamath (album), a 2009 album by American musician Mark Eitzel

• Klamath 5, or "555", a common prefix for fictitious telephone numbers
• Klamath coneflower, a species of genus Rudbeckia
• Klamath fawn lily, a species of genus Erythronium
• Klamath Lake sculpin, a fish species of genus Cottus
• Klamath trillium, or Pseudotrillium rivale, a flower species
• Klamath weed, or St. John's wort, a flowering plant of family Hypericaceae

This disambiguation page lists articles associated with the title Klamath.
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