Robert Williamson

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