Red River may refers to one of the following:

• Red River of the South, a tributary of the Mississippi in Texas, Oklahoma, Arkansas, and Louisiana in the United States
• Red River of the North in Canada and the United States
• Red River (Cumberland River), a tributary of the Cumberland in Kentucky and Tennessee
• Red River (Illinois), a tributary of Panther Creek in Woodford County
• Red River (Kentucky River), a tributary of the Kentucky
• Red River (Maine), a tributary of the Fish
• Red River (New Mexico), a tributary of the Rio Grande
• Red River, New York, a tributary of the Moose
• Red River (Oregon), in the United States
• Red River (St. Louis River tributary), in Minnesota and Wisconsin
• Red River (Wolf River tributary), in Wisconsin

• Red River (Asia) (Chinese characters: 紅河, 红河, Hóng Hé; Vietnamese: Sông Hồng) in China and Vietnam
• Red River (Victoria), in Australia
• Red River (British Columbia), a tributary of the Kechika in Canada
• Red River Floodway, a diversion of the Red River of the North around Winnipeg in Canada
• Red River (Grenada)
• Red River (New Zealand), a minor river on the North Island
• Red River (Amal) (Cornish: Dowr Amal), in the United Kingdom, discharging into Cornwall's south coast
• Red River (Koner) (Cornish: Dowr Koner), in the United Kingdom, discharging into Cornwall's north coast
• Baloué River, in Mali (Manding: "Red River")
• Kızılırmak River or Halys River, in Turkey (Turkish: "Red River")
• Sutlej, river in India and Pakistan, sometimes known as the Red River

• Red River, a settlement in Inverness County, Nova Scotia, Canada
• Red River, New Mexico, a ski resort in the United States
• Red River, South Carolina, an unincorporated community in York County
• Red River, Tennessee, original name of the city now known as Adams
• Red River City, Texas, former town of 1870s, now part of Denison, Texas
• Red River, Kewaunee County, Wisconsin, a town in the United States
• Red River, Shawano County, Wisconsin, an unincorporated community in the United States
• Red River Army Depot, in Texas, United States
• Red River Colony, in Manitoba, Canada
• Red River, Queensland, a rural locality in Australia

• Red River War, a United States military campaign in 1874–75

• Red River County, Texas, in the United States
• Red River Delta, an administrative region of Vietnam
• Red River Parish, Louisiana, in the United States
• Red River Valley, a region in Canada that is drained by the Red River of the North
• Honghe Hani and Yi Autonomous Prefecture, Yunnan, in China (Mandarin: "Red River")

• Red River (mythology) in Chinese mythology, one of the four cardinal rivers which flows out of the mythical Kunlun

• Red River (1948 film), an American film named for the Texan river
• Red River (1988 film), a television movie remake of the classic film from 1948, starring James Arness, Bruce Boxleitner, and Gregory Harrison
• Red River Valley (1997 film), a Chinese film about British intrusion of Tibet
• Red River (2009 film), a Chinese film named for the Yunnanese river
• Red River (manga), a 1995 Japanese graphic novel series named for the Turkish river
• Red River, a fictional river in City of Heroes
• Red River Cereal, a flax-based hot breakfast cereal
• Red River College, a college in Winnipeg, Manitoba, Canada
• Red River Drifter, 2013 album by Michael Martin Murphey
• Red River Trails, historical trails of the Red River of the North
• "Red River Valley", an American folk song set along one of the American Red Rivers
• Red River, 2006 novel by Lalita Tademy

• Colorado River (disambiguation), for rivers bearing the Spanish word for "Red"
• Ipiranga (disambiguation) (sometimes Ypiranga), for places bearing the Tupian word for "Red River"
• Ipiranga River (disambiguation), for rivers bearing the Tupian word for "Red River"
• Little Red River (disambiguation)
• Red River cart, a two-wheeled cart used historically in the area of the Red River of the North
• Red River Campaign, a series of battles fought in the American Civil War in 1864
• Red River Exhibition, annual festival in Canada
• Red River Expedition (disambiguation), various expeditions of that name
• Red River floods, various floods of the Red River of the North
• Red river hog, an African species of wild pig, reddish in color
• Red River Rebellion, the Métis rebellion led by Louis Riel in present-day Manitoba, Canada
• Red River Showdown, an annual football game between the University of Oklahoma and the University of Texas
• Rouge River (disambiguation), for rivers bearing the French word for "Red"
• Red River Valley (disambiguation)
• Río Tinto