Peter Simon Liss CBE FRS (born 27 October 1942) is a British environmental scientist, and professorial fellow, at the University of East Anglia.

[1] Liss studied at Durham University, earning a BSc.

[2] His research group is a part of the Laboratory for Global Marine and Atmospheric Chemistry (LGMAC).

[1] He is a member of the Solar Radiation Working Group.

[3] He was awarded the Challenger Society Medal in 2000 and the John Jeyes Medal of the Royal Society of Chemistry in 2003/04.