The Alapaha River (pron.: //) is a 202-mile-long (325 km) river in southern Georgia and northern Florida in the United States. It is a tributary of the Suwannee River, which flows to the Gulf of Mexico.
The Alapaha River rises in southeastern Dooly County, Georgia, and flows generally southeastwardly through or along the boundaries of Crisp, Wilcox, Turner, Ben Hill, Irwin, Tift, Berrien, Atkinson, Lanier, Lowndes and Echols Counties in Georgia, and Hamilton County in Florida, where it flows into the Suwannee River 10 miles (16 km) southwest of Jasper. Along its course it passes the Georgia towns of Rebecca, Alapaha, Willacoochee, Lakeland, and Statenville.
Near Willacoochee, Georgia, the Alapaha collects the Willacoochee River. In Florida, it collects the Alapahoochee River and the short Little Alapaha River, which rises in Echols County, Georgia, and flows southwestward.
 Variant names
- U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed April 18, 2011
- Columbia Gazetteer of North America entry
- DeLorme (2003). Georgia Atlas & Gazetteer. Yarmouth, Maine: DeLorme. ISBN 0-89933-253-6.
- U.S. Geological Survey Geographic Names Information System: Alapaha River
- U.S. Geological Survey Geographic Names Information System: Little Alapaha River