Jean Claessens (18 June 1908 – 19 December 1978) was a Belgian footballer who played as a midfielder.

Claessens played for the invincible Union Saint-Gilloise triple Belgian champions from 1933 to 1935.

[2] He played in one game at the 1934 World Cup in Italy.

[3] He finished his career as player-coach at RAEC Mons after the War.

This biographical article related to association football in Belgium, about a midfielder, is a stub.