Sir Jonathan Stafford Nguyen Van-Tam (born 2 February 1964)[3] is a British physician specialising in influenza, including its epidemiology, transmission, vaccinology, antiviral drugs and pandemic preparedness.

He became a senior lecturer at the University of Nottingham (and consultant regional epidemiologist, Public Health Laboratory Service) in 1997,[15] before joining the pharmaceutical industry as an associate director at SmithKline Beecham in 2000.

Van-Tam returned to the public sector in 2004 at the Health Protection Agency Centre for Infections, where he was head of the pandemic influenza office until October 2007.

He chaired the European Centre for Disease Prevention and Control (ECDC) Expert Advisory Group on H5N1 human vaccines, sits on the UK national Scientific Pandemic Influenza Committee (SPI), and was a member of the UK Scientific Advisory Group for Emergencies (SAGE) during the 2009-10 pandemic.

[21] It was announced in January 2022 that Van-Tam would step down from the role of deputy chief medical officer for England at the end of March 2022.

[8] Van-Tam was appointed Member of the Order of the British Empire (MBE) in the 1998 New Year Honours as an acting major in the Lincolnshire Army Cadet Force.

It was awarded in recognition of his work in designing a medical kit to meet the special requirements of large groups of teenagers on camping expeditions.

[25] In 2021, the Royal College of Physicians invited Van-Tam to hold the Harveian Oration, the most prestigious lecture of the learned society.

In October 2022, Van-Tam was promoted to Honorary Colonel for Medical Support, in the Army Cadet Force (ACF).