Omar M. Yaghi (Arabic: عمر مونّس ياغي, born February 9, 1965) is a Jordanian-American chemist. He was born in Amman, Jordan. He is a Professor of Chemistry at the University of California, Berkeley. Yaghi is known for creating reticular chemistry, which is a new field of chemistry. It focuses on the stitching of molecular building blocks together by strong bonds to make open frameworks. 