The Viche Formation is a Langhian (Friasian to Colloncuran in the SALMA classification) geologic formation of the Borbón Basin in northwestern Ecuador. The formation underlies the Angostura Formation. Fossils of Ziphiidae indet. have been found in the formation.

• List of fossiliferous stratigraphic units in Ecuador

• G. Bianucci, W. Landini, G. Valleri, L. Ragaini, and A. Varola. 2005. First cetacean fossil records from Ecuador, collected from the Miocene of Esmeraldas Province. Rivista Italiana di Paleontologia e Stratigrafia 111(2):345-350