Robert Small may refer to:
Robert Small (minister) (1732–1808), Scottish minister, Moderator of the General Assembly of the Church of Scotland, mathematician and astronomer Robert Small (producer), American entertainment producer Robert Small (trade unionist) (1873–1918), Scottish trade unionist and socialist activist Robert Hardy Small (1891–1976), Canadian politician, Member of Parliament for Danforth
See also Robert Smalls (1839–1915), freed slave and United States politician