Gerel Ochir (; born 17 July 1941) is a Mongolian geologist. She specializes in petrology, geochemistry, and metallogeny. She has taught at the Mongolian University of Science and Technology for over 50 years and headed the Department of Geology for 30 years.
After earning bachelors and masters degrees in geology, geochemistry, and petrology from Charles University in Prague, she received her PhD and ScD through the Siberian Branch of the Russian Academy of Sciences.
Ochir has served as vice president of the International Union of Geological Sciences and received the Jan Masaryk Medal in 2021.