Katherine Louise Stuart (born 18 May 1967) is an English former sprinter who competed at the 1988 Summer Olympics.
Stuart won a silver medal in the 200 metres at the 1985 European Junior Championships.
Stuart finished second behind Joan Baptiste in the 200 metres event at the 1987 WAAA Championships and second again at the 1988 AAA Championships but this time behind Simmone Jacobs.
Stuart went on to represent Great Britain in the women's 200 metres at the 1988 Seoul Olympics.
Stuart finished second for a third time at the 1990 AAA Championships.