Robert Williamson may refer to: Robert Williamson III (born 1970), American poker player Robert McAlpin Williamson (1804–1859), Texas politician Robert S. Williamson (1825–1882), American soldier Robert B. Williamson (1892–1976), Maine judge Robert Wood Williamson (1856–1932), British solicitor and anthropologist Roy Williamson (bishop) (Robert Kerr Williamson, 1932–2019), British bishop Robert Williamson (geneticist) (born 1938), British-Australian molecular biologist See also Bobby Williamson (born 1961), Scottish football player and manager (Rangers FC, Kilmarnock FC, Hibernian FC, Uganda national team) Bobby Williamson (footballer, born 1933) (1933–1990), Scottish football player (St. Mirren FC) Robbie Williamson (born 1969), Scottish former footballer Robert Williamson Steele (1820–1901), Governor