Otocinclus huaorani is a species of armoured catfish in the family Loricariidae found in Colombia, Ecuador and Peru.

It is also found in Loreto, Peru and in the Napo river basin in Ecuador.

The type locality for the species is a tributary of the San Miguel river in Napo, Ecuador It is found at altitudes of 100–400 m.[1] Otocinclus huaorani is found in rivers and streams that have lime and also oxbow lakes.

Otocinclus huaorani is classified as least concern by the IUCN Red List due to its wide range.

The species is threatened in some areas by water pollution from urban waste and agricultural runoff.