Tongue River may refer to:

• Tongue River (North Dakota), U.S.
• Tongue River (Montana), a tributary of the Yellowstone River, in the U.S. states of Wyoming and Montana
  • Tongue River Dam
  • Tongue River Indian Reservation
  • Tongue River Reservoir State Park
  • Tongue River Railroad, a proposed rail line
• Tongue River (Texas), U.S.

• Tongue River Cave, in Dayton, Wyoming, U.S.
• Tongue River Member, a geologic member of the Fort Union Formation in North Dakota and Wyoming
• Tongue River Massacre (1820)
• Battle of the Tongue River, 1865
• Tongue Wash, in Nevada, U.S.