Félix Welkenhuysen was a Belgian footballer, born 12 December 1908 in Saint-Gilles (Belgium), died 20 April 1980.
He was a defender for Union Saint-Gilloise in the 1930s. He was part of the Union 60, the name given to the team unbeaten in Division 1 for 60 matches between 9 January 1933 (Union-Lierse SK, 2-2) and 10 February 1935 (Daring Bruxelles-Union 2-0). He was also Champion of Belgium three times, consecutively.
For the most of this legendary era, he was a Belgian international. He played four games for the Diables Rouges in 1934 including one game in the preliminary round of the Italy World Cup against Germany (lost, 5-2).
- Belgian international in 1934 (4 caps)
- First cap: 20 February 1934, Ireland-Belgium, 4-4 (friendly match)
- Participation in the 1934 World Cup (played 1 match)
- Champion of Belgium in 1933, 1934 and 1935 with R. Union Saint-Gilloise