Guillermo Chong

Guillermo Baltazar Chong Díaz is a Chilean geologist and professor at the Catholic University of the North at Antofagasta, Chile. In 2018 he was named distinguished son (hijo ilustre) of Arica. The mineral chongite and the extinct fish Chongichthys are named after him.

In 2011, together with Zulma Brandoni de Gasparini and others, Chong Díaz discovered a well-preserved fossilized skull of the family Metriorhynchidae. The team determined it to be a specimen of Metriorhynchus westermanni, an extinct marine crocodyliform.