Alexander Reuben Percy Moore MBE (1901–1991) was an English ballroom dancer from Stourbridge.
He held the post of Chairman and later President of the ISTD, and was Honorary President of the International Council of Ballroom Dance.
From 1932 Alex Moore issued the Alex Moore Monthly Letter Service, a periodical about ballroom dancing, with hints for dancers and instructors and news about dance championships.
His 1936 Ballroom Technique book is the base of the ISTD reference for the category of International Standard.
Addressing the need in quick reference, he devised the chart format of the description of ballroom dance figures, used today.