Stuart Loudon (born 11 April 1988 in Uddingston) is a British rally co-driver and engineer.

[1] He was a co-driver to Gus Greensmith at the 2021 Rally Italia Sardegna for M-Sport Ford.

[2] Loudon was born in Uddingston.

His grandfather is Boyd Tunnock, who owes Tunnock's.

[3] Loudon is also a qualified Rolls-Royce Aeronautical Engineer.