P
- Dwain Painter (1988–1991)
- Siulagi Palelei (1993–1995)
- Tyler Palko (2009)
- Jonathan Palmer (2007)
- Tom Palmer (1953–1954)
- George Papach (1948–1951)
- Babe Parilli (1971–1973)
- Buddy Parker (1957–1964)
- Frank Parker (1968–1969)
- Willie Parker (2004–2009)
- Jeremy Parquet (2007–2009)
- James Parrish (1995)
- Gordon Paschka (1943)
- Frank Pastin (1942)
- Marcel Pastoor (2001–2011)
- Frank Patrick (1948)
- John Patrick (1941–1946)
- Billy Patterson (1940)
- Stan Pavkov (1939–1940)
- Scott Paxson (2006–2009)
- Clarence Peaks (1964–1965)
- Morgan Pears (2003)
- Barry Pearson (1972–1973)
- Preston Pearson (1970–1974)
- Erric Pegram (1995–1996)
- Leon Pense (1945)
- John Perko (1937–1947)
- George Perles (1972–1981)
- Pete Perreault (1962)
- Darren Perry (1992–2006)
- Lowell W. Perry (1956), (1957), (1958)
- Ara Person (1970)
- John Petchel (1945)
- Ted Petersen (1977–1987)
- Todd Peterson (2002)
- John Petrella (1945)
- Ken Phares (1973)
- Marvin Philip (2006–2007)
- Joe Pierre (1945–1946)
- Roger Pillath (1966)
- Ed Pine (1965)
- Ray Pinney (1976–1987)
- Rocco Pirro (1940–1941)
- Mel Pittman (1935)
- Dick Plasman (1958–1961)
- George Platukis (1938–1941)
- Mark Plevelich (1986)
- Kirk Pointer (1996)
- Frank Pokorny (1985)
- Troy Polamalu (2003–2011)
- Frank Pollard (1980–1988)
- John Popovich (1944–1945)
- Joey Porter (1999–2006)
- Al Postus (1945)
- Hank Poteat (2000–2002)
- Myron Pottios (1961–1965)
- Bill Potts (1934)
- Mike Potts (2008)
- Ernie Pough (1976–1977)
- Maurkice Pouncey (2010–2011)
- Shar Pourdanesh (1999–2000)
- Ryan Powdrell (2009)
- Tim Powell (1966)
- John Powers (1962–1965)
- Bill Priatko (1957)
- Jimond Pugh (2003)
- Rollin Putzier (1988)
Read more about this topic: List Of Pittsburgh Steelers Players