The Amazon river dolphin, or pink river dolphin, Inia geoffrensis, is a freshwater river dolphin endemic to the Orinoco, Amazon, and Araguaia/Tocantins River systems of Brazil, Peru, Bolivia, Ecuador, Colombia, and Venezuela.  

It was previously listed as a vulnerable species by the IUCN due to pollution, overfishing, excessive boat traffic, and habitat loss, but in 2011 it was changed to data deficient  due to a lack of current information about threats, ecology, and population numbers and trends.

The Amazon river dolphin is found throughout the Amazon and Orinoco. It is particularly abundant in lowland rivers with extensive floodplains. During the annual rainy season, these rivers flood large areas of forests and marshes along their banks. The Amazon river dolphin specializes in hunting in these habitats, using its unusually flexible neck and spinal cord to maneuver among the underwater tree trunks, and using its long snout to extract prey fish from hiding places in hollow logs and thickets of submerged vegetation.