Stewart Holden (born 5 September 1979) is a competitive Scrabble player from the United Kingdom.
He represented England at the World Scrabble Championship 2003, where he finished in 62nd place, and represented Northern Ireland at the World Scrabble Championship 2011 where he finished in 28th place and achieved the highest game score of the tournament (694pts).
That enterprise was sold to fellow ABSP committee member Amy Byrne in July 2008.
In 2004, Holden was the overall winner of Series 51 of the long-running British television game show Countdown.
Holden is now a full-time humanist celebrant with Humanists UK in Northern Ireland; he has conducted several hundred weddings and funeral services, including those of Northern Ireland radio presenters Stephen Clements and Kim Lenaghan.