Robert Lelangue (born 4 February 1940) is a retired Belgian cyclist who was active between 1958 and 1969.

He competed at the 1960 Summer Olympics in the road race and finished in 49th place.

[1] Next year he turned professional and won one stage of the Tour de Luxembourg.

[2] After retiring from competitions Lelangue worked as a cycling manager, and from 1986 to 2005 as a technical support staff with the Tour de France.

This biographical article related to a Belgian cyclist born in the 1940s is a stub.