Jozef Maria Damiaan "Jef", Baron Colruyt[1] (born 18 October 1958, Halle) is a Belgian businessman. In 1994 he succeeded his father Jo Colruyt as head of Colruyt, a company with more than 26,000 employees. With an estimated fortune of 2.521 billion euro, he is one of the wealthiest people of Belgium.