Katrien Verstuyft (born 21 July 1982 in Antwerp), is a Belgian professional triathlete, National Champion (Sprint, Olympic Distance, and Team) of the year 2009, and member of the National Team.
Katrien Verstuyft lives in Mortsel and represents the local club ATRIAC.
In 2009, Verstyuft also took part in the French Club Championship Series Lyonnaise des Eaux, representing Charleville Tri Ardennes. At Tours/Tourangeaux (19 July 2009), Paris (30 August 2009) and at the Grand Final in La Baule (27 September 2009) she placed 18th, 14th, and 18th respectively. In 2010, she did not compete in this French circuit though the club still enumerates her among its elite athletes. Tri Ardennes almost exclusively depends on foreign elite stars like Olga Dmitrieva and Emma Moffatt. In 2010 it could nominate only one French female triathlete for only one competition, i.e. Jeanne Collonge at Dunkirk.