Jenny Anne Barretto

Jenny Anne Barretto is a Filipino geologist and geophysicist based in New Zealand. She is credited for the discovery of Apolaki, the largest caldera in the world.

Barretto was born and raised in the Philippines. She acquired her master's degree in geology from the University of the Philippines in 1998.

Career and research Barretto initially worked at UP National Institute of Geological Sciences in Quezon City. She took part at the initial examination of the structure of Benham Rise; it was a prerequisite for the Philippine government's formal claim of the territory in 2012. They were able to prove the morphological affinity of Benham Rise to the country's largest island, Luzon, and therefore concluded that Benham Rise is an extension of the Philippines' continental platform.

Barretto began working as a geologist and geophysicist for GNS Science in 2013. The Apolaki Caldera is about 150 km in diameter, making it the largest known Caldera in the world, and 90 km larger than the Yellowstone Caldera.

In 2021, the Philippine House Committee on Science and Technology approved a house resolution to commend her for her discovery of the Apolaki Caldera.

Barretto is also a member of American Association of Petroleum Geologists and the Geological Society of the Philippines.