Thomas Hugh Pennington (born 19 April 1938) is emeritus professor of bacteriology at the University of Aberdeen, Scotland.
He spent a year at the University of Wisconsin–Madison before moving to the Glasgow Institute of Virology in 1969, where he researched vaccinia, smallpox and other viruses.
He also wrote on the history of science and medicine such as the introduction of antiseptic surgery to Aberdeen by Alexander Ogston using a Lister 'steam spray producer'.
[6] In late November 1996, an Escherichia coli outbreak in the town of Wishaw prompted the Scottish Office to establish an expert group, chaired by Pennington.
He was appointed Commander of the Order of the British Empire (CBE) in the 2013 Birthday Honours for services to microbiology and food hygiene.