Alexander Rueb (27 December 1882 – 2 February 1959) was a Dutch lawyer, diplomat, and chess official.
One of the founders of international chess governing body, FIDE, Rueb was elected its first president in 1924.
His large and well-known chess library was destroyed by bombs in 1945, but he rebuilt it after World War II.
Rueb was also an important figure in the field of endgame studies, simultaneously publishing two standard works: De Schaakstudie (Gouda, 1949–55, 5 vols.)
This biographical article relating to a Dutch chess figure is a stub.