| Osa | |
| Native Name Lang: | es |
| Settlement Type: | Canton |
| Pushpin Map: | Costa Rica |
| Pushpin Map Alt: | Osa canton location in Costa Rica |
| Pushpin Map Caption: | Osa canton location in Costa Rica |
| Coordinates: | 8.8913°N -83.5286°W |
| Map Alt: | Osa canton |
| Image Alt: | Corcovado National Park |
| Established Title: | Creation |
| Established Date: | 29 July 1940[1] |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Puntarenas |
| Seat Type: | Head city |
| Seat: | Puerto Cortés |
| Government Type: | Municipality |
| Governing Body: | Spanish; Castilian: Municipalidad de Osa |
| Parts Type: | Districts |
| Parts Style: | list |
| Parts: | Districts |
| P1: | Puerto Cortés |
| P2: | Palmar |
| P3: | Sierpe |
| P4: | Bahía Ballena |
| P5: | Piedras Blancas |
| P6: | Bahía Drake |
| Area Total Km2: | 1930.24 |
| Elevation M: | 24 |
| Population Total: | 29433 |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Blank Name: | Canton code |
| Blank Info: | 605 |
Osa is a canton in the Puntarenas province of Costa Rica.[2] [3] The head city is in Puerto Cortés district.
Osa was created on 29 July 1940 by decree 185. In pre-Columbian times was populated by Boruca which left legacies such as fields and stone walkways.
Osa has an area of km2[4] and a mean elevation of metres.
The canton begins at the Barú River near Dominical on the central Pacific coast. It continues as a narrow strip of land southward to include the area around Palmar and Sierpe, finally widening to take in the entire neck and upper portion of the Osa Peninsula, where significant gold mining operations are located. As its name suggests, humpback whales and dolphins migrate into the waters to calve, mate, and to rest. Whale watching is available along the coasts. Isla del Caño is part of Osa canton.
The canton of Osa is subdivided into the following districts:
For the 2011 census, Osa had a population of inhabitants.[5]
The canton is covered by the following road routes:
In the canton there are conservation areas that are part of the Osa Conservation Area, such as Corcovado National Park, Ballena Marine National Park and Piedras Blancas National Park. The stone spheres of Costa Rica are found in this canton.