Saint John River or Saint Johns River may refer to:

Rivers

Saint John River (Bay of Fundy) The Saint John River (; Maliseet-Passamaquoddy: ''Wolastoq'') is a river flowing within the Dawnland region from headwaters in the Notre Dame Mountains near the Maine-Quebec border through western New Brunswick to the northwest shore of the ...

, in Canada (mainly New Brunswick but also Quebec) and the United States (Maine) *

Saint John River (Liberia) The Saint John River is one of the six main rivers in the West African nation of Liberia. With its headwaters in neighboring Guinea, the river flows generally southwest through Liberia and empties into the Atlantic Ocean at Bassa Cove near Edina, ...

, in West Africa *

Saint Johns River (Grenada) The Saint Johns River is a river of Grenada. See also *List of rivers of Grenada This is a list of rivers of Grenada. Rivers in Grenada flow towards the Caribbean Sea, which surrounds the islands of Grenada. There are no rivers on the islan ...

, in Grenada *

St. John's River (California) The St. John's River is a distributary of the Kaweah River in the San Joaquin Valley of California in the United States. The river begins at a diversion dam at McKay's Point, about a mile west of Lemon Cove. The distributary flows west along th ...

, in Visalia, California, United States *

St. Johns River The St. Johns River () is the longest river in the U.S. state of Florida and is the most significant one for commercial and recreational use. At long, it flows north and winds through or borders 12 counties. The drop in elevation from River s ...

, in Florida, United States

Communities

* St. John River District, Grand Bassa County, Liberia

Education

St. Johns River State College St. Johns River State College is a public college in Northeast Florida with campuses in Palatka, St. Augustine, and Orange Park. Founded in 1958 (for organizational purposes) as St. Johns River Junior College, a historically black college, it ...

, a public college in

Northeast Florida Florida's First Coast, or simply the First Coast, is the Atlantic coast of North Florida in the United States. It is the same general area as the directional region of Northeast Florida. It consists roughly of the counties abutting Jacksonville: ...

, United States

Utilities

* St. Johns River Terminal Company * St. Johns River Water Management District

Transportation

* St. Johns River Light, decommmissioned lighthouse in Florida, United States * St. Johns River Shipbuilding Company, defunct company in Florida, United States *

St. Johns River Veterans Memorial Bridge The original St. Johns River Bridge was a four-lane concrete-and-steel causeway bridge constructed over the St. Johns River at the west outlet of Lake Monroe (Florida), Lake Monroe. It is a part of Interstate 4, and spans the border between S ...

, Florida, United States