Leo Albert Jozef "Lei" Clijsters (6 November 1956 – 4 January 2009) was a Belgian professional footballer who played as a centre-back.

[2] Clijsters played in 40 international matches for the Belgium national team, participating at UEFA Euro 1984 and the 1986 and 1990 FIFA World Cups.

In the 1986 edition, as Belgium reached the last four, he only appeared in two matches (being used as a substitute in the 2–1 win over Iraq and the famous round of 16 4–3 victory over the USSR.

In 1990, Clijsters saw action against South Korea (2–0 win), Uruguay (in which he scored a header in a 3–1 triumph[6]) and England (1–0 loss after extra time).

[8][9] Upon his death, Belgian newspapers like Het Laatste Nieuws revealed that he suffered from a recurrence of melanoma which had spread to the lungs and other organs, having already experienced a bout of this condition twenty-five years earlier.