| Senate Name | Dist.# | County | Party | Session # | Dates | Notes |
|---|
|
|
| Adams, James L. | 45 | Allegheny (Part) | Rep | 119 | 1911-12 |
| Adams, James L. | 45 | Allegheny (Part) | Rep | 118 | 1909-10 |
| Adams, Robert, Jr. | 6 | Philadelphia (Part) | Rep | 105 | 1883-84 |
| Adams, Robert, Jr. | 6 | Philadelphia (Part) | Rep | 106 | 1885-86 |
| Afflerbach, Roy C. | 16 | Lehigh (Part) | Dem | 171-2 | 1987-88 |
| Afflerbach, Roy C. | 16 | Lehigh (Part) | Dem | 173-4 | 1989-90 |
| Afflerbach, Roy C. | 16 | Lehigh (Part) | Dem | 175-6 | 1991-92 |
| Afflerbach, Roy C. | 16 | Lehigh (Part), Northampton (Part) | Dem | 177-8 | 1993-94 |
| Afflerbach, Roy C. | 16 | Lehigh (Part), Northampton (Part) | Dem | 179-80 | 1995-96 |
| Afflerbach, Roy C. | 16 | Lehigh (Part), Northampton (Part) | Dem | 181-2 | 1997-98 |
| Agnew, Franklin H. | 46 | Beaver, Washington | Rep | 105 | 1883-84 |
| Agnew, Franklin H. | 46 | Beaver, Washington | Rep | 106 | 1885-86 |
| Albright, Andrew | 9 | Northumberland, Union | Dem | 47 | 1822-23 |
| Albright, Edwin | 7 | Lehigh, Northampton | Dem | 95 | 1871 |
| Albright, Edwin | 11 | Lehigh, Carbon | Dem | 96 | 1872 |
| Albright, Edwin | 11 | Lehigh, Carbon | Dem | 97 | 1873 |
| Albright, Edwin | 11 | Lehigh, Carbon | Dem | 98 | 1874 |
| Albright, Edwin | 16 | Lehigh | Dem | 99 | 1875 |
| Albright, Edwin | 16 | Lehigh | Dem | 100 | 1876 |
| Alexander, Cyrus T. | 34 | Clinton, Clearfield, Centre | Dem | 103 | 1879-80 |
| Alexander, Cyrus T. | 34 | Clinton, Clearfield, Centre | Dem | 104 | 1881-82 |
| Alexander, James B. | 1 | Philadelphia (Part) | Rep | 97 | 1873 |
| Alexander, James B. | 1 | Philadelphia (Part) | Rep | 98 | 1874 |
| Alexander, James B. | 1 | Philadelphia (Part) | Rep | 99 | 1875 |
| Alexander, Joseph | 34 | Clearfield, Centre | Rep | 119 | 1911-12 |
| Alexander, Joseph | 34 | Clearfield, Centre | Rep | 120 | 1913-14 |
| Alexander, W. Scott | 36 | Bedford, Fulton, Somerset | Rep | 107 | 1887-88 |
| Alexander, W. Scott | 36 | Bedford, Fulton, Somerset | Rep | 108 | 1889-90 |
| Allen, Harrison | 28 | Mercer, Venango, Warren | Rep | 94 | 1870 |
| Allen, Harrison | 28 | Mercer, Venango, Warren | Rep | 95 | 1871 |
| Allen, Harrison | 30 | Erie, Warren | Rep | 96 | 1872 |
| Allen, O. C. | 48 | Warren, Venango | Rep | 107 | 1887-88 |
| Allen, O. C. | 48 | Warren, Venango | Rep | 108 | 1889-90 |
| Allen, Robert P. | 24 | Columbia, Montour, Lycoming, Sullivan | Dem | 101 | 1877 |
| Allen, Robert P. | 24 | Columbia, Montour, Lycoming, Sullivan | Dem | 102 | 1878 |
| Allen, Robert P. | 24 | Columbia, Montour, Lycoming, Sullivan | Dem | 100 | 1876 |
| Allshouse, Henry | 16 | Westmoreland, Indiana, Jefferson | Dem | 44 | 1819-20 |
| Allshouse, Henry | 16 | Westmoreland, Indiana, Jefferson | Dem | 45 | 1820-21 |
| Allshouse, Henry | 16 | Westmoreland, Indiana, Jefferson | Dem | 46 | 1821-22 |
| Allshouse, Henry | 18 | Westmoreland | Dem | 47 | 1822-23 |
| Allshouse, Henry | 18 | Westmoreland | Dem | 48 | 1823-24 |
| Allshouse, Henry | 18 | Westmoreland | Dem | 49 | 1824-25 |
| Allshouse, Henry | 18 | Westmoreland | Dem | 50 | 1825-26 |
| Allshouse, Henry | 18 | Westmoreland | Dem | 51 | 1826-27 |
| Alter, Jacob | 13 | Cumberland | Dem | 42 | 1817-18 |
| Alter, Jacob | 13 | Cumberland | Dem | 43 | 1818-19 |
| Alter, Jacob | 13 | Cumberland | Dem | 44 | 1819-20 |
| Alter, Jacob | 13 | Cumberland | Dem | 45 | 1820-21 |
| Ammerman, Joseph S. | 34 | Clearfield, Centre, Cameron, Clinton | Dem | 155-6 | 1971-72 |
| Ammerman, Joseph S. | 34 | Clearfield, Centre, Cameron, Cambria (Pt.), Mifflin (Pt.) | Dem | 157-8 | 1973-74 |
| Ammerman, Joseph S. | 34 | Clearfield, Centre, Cameron, Cambria (Part), Mifflin (Part) | Dem | 159-60 | 1975-76 |
| Ammerman, Joseph S. | 34 | Clearfield, Centre, Cameron, Cambria (Part), Mifflin (Part) | Dem | 161-2 | 1977-78 |
| Anderson, George H. | 25 | Allegheny | Rep | 95 | 1871 |
| Anderson, George H. | 23 | Allegheny | Rep | 96 | 1872 |
| Anderson, George H. | 23 | Allegheny | Rep | 97 | 1873 |
| Anderson, George H. | 23 | Allegheny | Rep | 98 | 1874 |
| Anderson, George H. | 43 | Allegheny (Part) | Rep | 99 | 1875 |
| Anderson, George H. | 43 | Allegheny (Part) | Rep | 100 | 1876 |
| Anderson, George K. | 29 | Crawford | Rep | 98 | 1874 |
| Anderson, George K. | 50 | Crawford | Rep | 99 | 1875 |
| Anderson, George K. | 50 | Crawford | Rep | 100 | 1876 |
| Anderson, William B. | 16 | Perry, Cumberland | Dem | 69 | 1845 |
| Anderson, William B. | 16 | Perry, Cumberland | Dem | 70 | 1846 |
| Anderson, William B. | 16 | Perry, Cumberland | Dem | 71 | 1847 |
| Andrews, W. Thomas | 21 | Butler, Lawrence | Rep | 157-8 | 1973-74 |
| Andrews, W. Thomas | 21 | Butler, Lawrence | Rep | 159-60 | 1975-76 |
| Andrews, W. Thomas | 21 | Butler, Lawrence | Rep | 161-2 | 1977-78 |
| Andrews, W. Thomas | 21 | Butler, Lawrence | Rep | 163-4 | 1979-80 |
| Andrews, William H. | 50 | Crawford | Rep | 111 | 1895-96 |
| Andrews, William H. | 50 | Crawford | Rep | 112 | 1897-98 |
| Andrezewski, Anthony B. | 49 | Erie (Part) | Dem | 165-6 | 1981-82 |
| Andrezewski, Anthony B. | 49 | Erie (Part) | Dem | 167-8 | 1983-84 |
| Andrezewski, Anthony B. | 49 | Erie (Part) | Dem | 169-70 | 1985-86 |
| Andrezewski, Anthony B. | 49 | Erie (Part) | Dem | 171-2 | 1987-88 |
| Andrezewski, Anthony B. | 49 | Erie (Part) | Dem | 173-4 | 1989-90 |
| Andrezewski, Anthony B. | 49 | Erie (Part) | Dem | 175-6 | 1991-92 |
| Andrezewski, Anthony B. | 49 | Erie (Part) | Dem | 177-8 | 1993-94 |
| Andrezewski, Anthony B. | 49 | Erie (Part) | Dem | 179-80 | 1995-96 |
| Anthony, Joseph B. | 13 | Lycoming, Centre, Clearfield, McKean, Potter | Dem | 55 | 1830-31 |
| Apple, Benjamin | 27 | Snyder, Northumberland, Union | Rep | 128 | 1929-30 |
| Apple, Benjamin | 27 | Snyder, Northumberland, Union | Rep | 129 | 1931-32 |
| Arlene, Herbert | 3 | Philadelphia (Part) | Dem | 151-2 | 1967-68 |
| Arlene, Herbert | 3 | Philadelphia (Part) | Dem | 153-4 | 1969-70 |
| Arlene, Herbert | 3 | Philadelphia (Part) | Dem | 155-6 | 1971-72 |
| Arlene, Herbert | 3 | Philadelphia (Part) | Dem | 157-8 | 1973-74 |
| Arlene, Herbert | 3 | Philadelphia (Part) | Dem | 159-60 | 1975-76 |
| Arlene, Herbert | 3 | Philadelphia (Part) | Dem | 161-2 | 1977-78 |
| Arlene, Herbert | 3 | Philadelphia (Part) | Dem | 163-4 | 1979-80 |
| Armstrong, Gibson E. | 13 | Lancaster (Part) | Rep | 169-70 | 1985-86 |
| Armstrong, Gibson E. | 13 | Lancaster (Part) | Rep | 171-2 | 1987-88 |
| Armstrong, Gibson E. | 13 | Lancaster (Part) | Rep | 173-4 | 1989-90 |
| Armstrong, Gibson E. | 13 | Lancaster (Part) | Rep | 175-6 | 1991-92 |
| Armstrong, Gibson E. | 13 | Lancaster (Part), York (Part) | Rep | 177-8 | 1993-94 |
| Armstrong, Gibson E. | 13 | Lancaster (Part), York (Part) | Rep | 179-80 | 1995-96 |
| Armstrong, Gibson E. | 13 | Lancaster (Part), York (Part) | Rep | 181-2 | 1997-98 |
| Armstrong, Gibson E. | 13 | Lancaster (Part), York (Part) | Rep | 183-4 | 1999-00 |
| Armstrong, Gibson E. | 13 | Lancaster (Part), York (Part) | Rep | 185-6 | 2001-02 |
| Armstrong, Gibson E. | 13 | Lancaster (Part), York (Part) | Rep | 187-8 | 2003-04 |
| Armstrong, Joseph G., Jr. | 38 | Allegheny (Part) | Rep | 129 | 1931-32 |
| Armstrong, Joseph G., Jr. | 38 | Allegheny (Part) | Rep | 130 | 1933-34 |
| Arnholt, Michael A. | 45 | Allegheny (Part) | Rep | 104 | 1881-82 |
| Arnholt, Michael A. | 45 | Allegheny (Part) | Rep | 105 | 1883-84 |
| Aron, Max | 5 | Philadelphia (Part) | Rep | 124 | 1921-22 |
| Aron, Max | 5 | Philadelphia (Part) | Rep | 125 | 1923-24 |
| Aron, Max | 5 | Philadelphia (Part) | Rep | 126 | 1925-26 |
| Aron, Max | 5 | Philadelphia (Part) | Rep | 127 | 1927-28 |
| Aron, Max | 5 | Philadelphia (Part) | Rep | 128 | 1929-30 |
| Aron, Max | 5 | Philadelphia (Part) | Rep | 129 | 1931-32 |
| Aron, Max | 5 | Philadelphia (Part) | Rep | 130 | 1933-34 |
| Aron, Max | 5 | Philadelphia (Part) | Rep | 131 | 1935-36 |
| Audenreid, William | 6 | Berks, Schuylkill | Dem | 49 | 1824-25 |
| Audenreid, William | 6 | Berks, Schuylkill | Dem | 50 | 1825-26 |
| Audenreid, William | 6 | Berks, Schuylkill | Dem | 51 | 1826-27 |
| Audenreid, William | 6 | Berks, Schuylkill | Dem | 52 | 1827-28 |
| Aull, William F. | 44 | Allegheny (Part) | Rep | 105 | 1883-84 |
| Aull, William F. | 44 | Allegheny (Part) | Rep | 106 | 1885-86 |