R
- Carroll Raborn (1936–1937)
- Dan Radakovich (1971, 1974–1977)
- Alex Rado (1934)
- George Rado (1935–1937)
- Vince Ragunas (1949)
- Matt Raich (2004–2006)
- Pete Rajkovich (1934)
- Buster Ramsey (1962–1964)
- Antwaan Randle El (2002–2005, 2010)
- Walt Rankin (1944)
- Walter Rasby (1994–2004)
- Leo Raskowski (1933)
- Randy Rasmussen (1984–1986)
- Eric Ravotti (1994–1996)
- Israel Raybon (1996)
- Dave Reavis (1974–1975)
- Bert Rechichar (1960)
- Redding (1935)
- Isaac Redman (2009–2011)
- Jeff Reed (2002–2010)
- Dan Reeder (1986–1987)
- Cad Reese (1934–1936)
- Jerry Reese (1988)
- Jordan Reffet (2008–2009)
- John Reger (1955–1963)
- Willie Reid (2006–2007)
- Will Renfro (1960)
- Joe Repko (1946–1947)
- Jared Retkofsky (2008–2009)
- Randy Reutershan (1978)
- Ray Reutt (1943)
- Billy Reynolds (1958)
- Jim Reynolds (1946)
- Reznichak (1935)
- Don Rhodes (1933)
- Loran "Dave" Ribble (1934–1935)
- Perry Richards (1957)
- Huey Richardson (1991)
- Terry Richardson (1996)
- Rodney Richmond (1987)
- Tom Ricketts (1989–1991)
- Lou Riecke (1970–1979)
- Bill Riehl (1980–1981)
- Jay Riemersma (2003–2004)
- John Rienstra (1986–1990)
- Dick Riffle (1941–1942)
- Avon Riley (1987)
- Cameron Riley (1987)
- Gabriel Rivera (1983)
- John Roberts (1934)
- Bill Robinson (1952)
- Ed Robinson (1994)
- Gil Robinson (1933)
- Jack Robinson (1938)
- Willy Robinson (2000–2003)
- Marshall Robnett (1944)
- Mike Rodak (1942)
- Mark Rodenhauser (1998)
- John Rodgers (1982–1984)
- Ben Roethlisberger (2004–2011)
- Fran Rogel (1950–1957)
- Cullen Rogers (1946)
- Rondour (1935)
- Gene Ronzani (1954)
- Harvey Rooker (1948)
- Arthur J. Rooney, Sr. (1933–1988)
- Art Rooney, Jr. (1960–2011)
- Art Rooney II (2003–2011)
- Dan Rooney (1960–2011)
- J.P. Rooney (1934–1935)
- Tim Rooney (1973–1979)
- Andres Roosna (1996–1997)
- Dedrick Roper (2004–2005)
- Jim Rorison (1938)
- Oliver Ross (2000–2004)
- Allen Rossum (2007)
- Pete Rostosky (1983–1986)
- Tom Rouen (2002)
- Bob Rowley (1963)
- John Rowser (1970–1973)
- Mark Royals (1992–1994)
- Orpheus Roye (1996–2009)
- Aubrey Rozzell (1957)
- Eddie Rucinski (1944)
- Grey Ruegamer (2000)
- Guy Ruff (1982–1983)
- Ernie Ruple (1968–1969)
- Andy Russell (1963–1976)
- Gary Russell (2007–2009)
- Rod Rust (1989)
- Rod Rutherford (2005)
- Ed Ryan (1948)
Read more about this topic: List Of Pittsburgh Steelers Players