Sir Salvador Enrique Moncada Seidner, FRS, FRCP, FMedSci (born 3 December 1944) is a Honduran-British pharmacologist and professor.

He gained fame for his discoveries related to nitric oxide function and metabolism, and his exclusion from the 1996 Lasker Award and the 1998 Nobel Prize in medicine.

In 1971 he went to London to work on a research doctorate with John Vane at the Department of Pharmacology of the Institute of Basic Medical Sciences, Royal College of Surgeons.

In 1996, Moncada moved to this university, where he was director of the UCL Wolfson Institute (formerly known as The Cruciform Project for Strategic Medical Research) until 2011 and a professor of experimental biology and therapeutics until 2013.

[2][12] His scientific career began at the Royal College of Surgeons, where he collaborated in the discovery that aspirin-like drugs inhibit prostaglandin biosynthesis.

This work contributed to the understanding of how low doses of aspirin prevent cardiovascular episodes such as myocardial infarction and stroke.

Most recently, his work has led to the finding of the molecular mechanism that coordinates cell proliferation with the provision of metabolic substrates required for this process.