The Arapaho are a tribe of Native Americans who originally lived in what is now eastern Colorado and Wyoming.

Arapaho or Arapahoe may also refer to:

• Arapahoe Tribe of the Wind River Reservation, federally recognized tribe of Northern Arapaho in Wyoming
• Cheyenne and Arapaho Tribes, federally recognized tribe of Southern Arapaho in Oklahoma
• Arapaho language

Places

• Arapahoe, Colorado, an unincorporated town
• Arapahoe County, Colorado
• Arapahoe Basin, a ski area in Colorado
• Arapaho Center station (Dallas Area Rapid Transit), a transit station in Richardson, Texas
• Arapahoe at Village Center (RTD), a transit station in Greenwood Village, Colorado
• Arapahoe, Nebraska, a small city
• Arapahoe, Wyoming, a town on the Wind River Indian Reservation, home to the Northern Arapahoe Tribe
• Arapahoe, North Carolina, a small town on the eastern coast of North Carolina on the Neuse River
• Arapaho, Oklahoma, county seat of Custer County, Oklahoma

Transportation

• USS Arapahoe (1864), a sloop-of-war or frigate which was never constructed, being canceled in 1866
• USS Arapaho (AT-14), a tugboat launched on 20 June 1914
• USS Arapaho (ATF-68), a tugboat laid down on 8 November 1941 at Charleston, South Carolina
• Piper PA-40 Arapaho, a replacement for the Piper PA-39 Twin-Comanche C/R. Only three built, project cancelled
• Bell ARH-70 Arapaho, a light military helicopter designed for the United States Army's Armed Reconnaissance Helicopter (ARH) program.

Other

• The "Arapaho" project, referring to the PCI Express computer expansion card interface format

See also

• Arapaha, a Timucua town in Spanish Florida