Lost River

Lost River may refer to:

Communities
In Australia:
 * Lost River, New South Wales

In Canada:
 * Lost River, Quebec, part of Harrington, Quebec
 * Rural Municipality of Lost River No. 313, Saskatchewan

In the United States:
 * Lost River, Idaho
 * Lost River, Indiana
 * Lost River Township, Martin County, Indiana
 * Lost River, Kentucky
 * Lost River, West Virginia

Rivers
In the United States:
 * Any losing stream, a river that decreases in volume as it flows
 * Lost River (Alaska), four different rivers
 * Lost River (Bering Sea)
 * A tributary to the Nowitna River
 * Lost River (California), in California and Oregon
 * Big Lost River, Idaho
 * Little Lost River, Idaho
 * Lost River (Indiana)
 * In Minnesota (listed by tributary):
 * Lost River (Clearwater River)
 * Lost River (Nett Lake)
 * Lost River (Roseau River)
 * Lost River (Tamarac River)
 * Lost River (Thief River)
 * Lost River (New Hampshire)
 * Lost River (Washington), a tributary to the Methow River
 * Lost River (Cacapon River), in West Virginia

Other

 * Lost River (film), a 2014 American film directed by Ryan Gosling
 * The Lost River, 2014 book by Michel Danino subtitled On The Trail of the Sarasvati
 * Lost River Cave, Kentucky
 * Lost River Caverns, Pennsylvania
 * Lost River State Forest, Minnesota
 * Lost River Athletic Conference, a 1970s high school conference in Indiana
 * Lost River Jr./Sr. High School, serving Merrill, Oregon