Stuart Loudon (born 11 April 1988 in Uddingston) is a British rally co-driver and engineer. He was a co-driver to Gus Greensmith at the 2021 Rally Italia Sardegna for M-Sport Ford.
Loudon was born in Uddingston. His grandfather is Boyd Tunnock, who owes Tunnock's. Loudon is also a qualified Rolls-Royce Aeronautical Engineer.
<nowiki>*</nowiki> Season still in progress.