Peter John Stang (born November 17, 1941) is an American chemist and Distinguished Professor of chemistry at the University of Utah.

At home, he made black gunpowder from ingredients at the drugstore, and developed a pH indicator from the juice of red cabbage that his mother cooked, and sold to his "fellow chemists".

[3] In 1956, when Stang was in the middle of his sophomore year in high school, he and his family fled the Soviet invasion of Hungary and immigrated to Chicago, Illinois.

[4] He became dean of the College of Science in 1997, during which he established the John E. and Marva M. Warnock Endowed Chair in Mathematics, and oversaw construction and dedication of the new David M. Grant NMR Center in 2006.

[1][2] Stang's research has focused on designing, and synthesizing, small organic molecules which self-assemble into larger geometric shapes with potential applications as nano-devices, shape-selective catalysts, and molecular agents for separation by chelation and chromatography.