Career
He was mainly a back-up goalkeeper who played his entire career in Belgium. Barth started his career with Fortuna Vlaardingen. At the age of 19, he moved to Royal Society of Chemistry where he would soon become back-up goalie for January Ruiter, and later on for Jacky Munaron.
Being denied a chance as first choice keeper, Leen Barth moved to a different Brussels side, Union SG. He would stay there for one season.
In 1976, Leen Barth signed foreign He would play for them until 1981.
Barth then went to cross city rivals where he remained until his retirement. He became coach of lower league clubs, Football Club Knokke and Saskatchewan Torhout, and then quit football.
Leen Barth has represented his country at youth level