Río San Juan (Spanish for ''St. John's River'') may refer to:

Rivers

San Juan River (Argentina) The San Juan River is, together with the Jáchal, the most important river of the Argentine province of San Juan. Both join the Desaguadero/Colorado system that ends at the Atlantic Ocean. Course The river starts near the town of Calingast ...

Río Grande de San Juan The Río Grande de San Juan is a river of Argentina. See also *List of rivers of Argentina This is a list of rivers of Argentina. Longest Rivers By drainage basin This list is arranged by drainage basin, with respective tributaries indented ...

Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor (red, yellow, and green from top to bottom) with the coat of arms of Bolivia in the center , flag_alt2 = 7 × 7 square p ...

and

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...

San Juan River (Vancouver Island) The San Juan River is a river that flows from east to west through southern Vancouver Island in British Columbia, Canada. The river originates in the Seymour Range, flows westward through the San Juan Valley to Port San Juan at Port Renfrew. H ...

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

San Juan River (Colombia) The San Juan River () is an important river of Colombia that flows into the Pacific Ocean through the Chocó Department. It is approximately and drains a watershed of . The river drains into a large delta that covers nearly . The average dischar ...

Río San Juan, Dominican Republic Río San Juan is a municipality in the María Trinidad Sánchez province of the Dominican Republic The Dominican Republic ( ; es, República Dominicana, ) is a country located on the island of Hispaniola in the Greater Antilles archipel ...

San Juan River (Guatemala) The San Juan River is a river of Guatemala. See also *List of rivers of Guatemala This is a list of rivers in Guatemala arranged by drainage basin. This list is arranged by drainage basin, with respective tributaries indented under each larger ...

* , ,

San Juan River (Tamaulipas) The San Juan River is the largest and most important river in the Mexican state of Nuevo León. The river feeds the El Cuchillo Dam, which provides the city of Monterrey with water. The San Juan River basin has a total surface area of . The San ...

and

San Juan River (Veracruz) The San Juan River is a river of Veracruz state in eastern Mexico. It is a tributary of the Papaloapan River. The San Juan River is formed by the confluence of the Lalana and Trinidad rivers, whose headwaters are in the Sierra de Villa Alta sub- ...

, in

Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...

San Juan River (Nicaragua) The San Juan River (Spanish: ''Río San Juan''), also known as El Desaguadero ("the drain"), is a river that flows east out of Lake Nicaragua into the Caribbean Sea. A large section of the border between Nicaragua and Costa Rica runs on the south ...

* *

San Juan River (Metro Manila) The San Juan River is one of the main river systems in Metro Manila, Philippines, and is a major tributary of the Pasig River. It begins near La Mesa Dam as the San Francisco del Monte River, which officially takes the name San Juan River when it ...

and

San Juan River (Calamba) The San Juan River ( tl, Ilog ng San Juan), also known as Calamba River, is a river system in Calamba, Laguna, Philippines. It is one of 21 major tributaries of Laguna de Bay and is regularly monitored by the Laguna Lake Development Authority (LLD ...

, both in the

Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...

St. Johns River The St. Johns River ( es, Río San Juan) is the longest river in the U.S. state of Florida and its most significant one for commercial and recreational use. At long, it flows north and winds through or borders twelve counties. The drop in eleva ...

Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...

and San Juan River in

Utah Utah ( , ) is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to it ...

, both in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

San Juan River (Uruguay) The San Juan River (Spanish, Río San Juan) is a river of Uruguay Uruguay (; ), officially the Oriental Republic of Uruguay ( es, República Oriental del Uruguay), is a country in South America. It shares borders with Argentina to its west an ...

San Juan River (Venezuela) San Juan River (Río San Juan) is a river in Sucre and Monagas states, north-eastern Venezuela. Its eastern part forms the limit between both states before it flows into the Gulf of Paria. The Guarapiche River flows into a short body named Caño F ...

and , both in

Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in th ...

Other

* Río San Juan Municipality,

Dominican Republic The Dominican Republic ( ; es, República Dominicana, ) is a country located on the island of Hispaniola in the Greater Antilles archipelago of the Caribbean region. It occupies the eastern five-eighths of the island, which it shares wit ...

Río San Juan Department Río San Juan () is a department in Nicaragua. It was formed in 1957 from parts of Chontales and Zelaya departments. It covers an area of 7,543 km2 and has a population of 137,189 (2021 estimate). The capital is San Carlos. The departm ...

and Río San Juan Wildlife Refuge in

Nicaragua Nicaragua (; ), officially the Republic of Nicaragua (), is the largest country in Central America, bordered by Honduras to the north, the Caribbean to the east, Costa Rica to the south, and the Pacific Ocean to the west. Managua is the cou ...