Richard Williamson is the name of:
- Richard Williamson (bishop) (born 1940), formerly of the Society of St. Pius X
- Richard Williamson (American football) (1941–2015), retired wide receivers coach
- Richard Williamson (sailor) (born 1944), Australian Olympic sailor
- Richard T. Williamson (born 1958), non-fiction writer
- Richard S. Williamson (1949–2013), US special envoy to Sudan and former Chairman of the Illinois Republican Party
- Rich Williamson (filmmaker), Canadian film director
- Richie Williamson (born 1973), New South Wales politician