| Period |
| 2022 - Present |
| 2019 - 2022 |
| 2016 - 2019 |
| 2013 - 2016 |
| 2010 - 2013 |
| 2007 - 2010 |
| 2004 - 2007 |
| 2001 - 2004 |
| 1998 - 2001 |
| 1989 - 1995 |
| 1980 - 1986 |
| 1971 - 1980 |
| 1970 - 1971 |
| 1963 - 1970 |
| 1959 - 1963 |
| 1955 - 1959 |
| 1951 - 1955 |
| 1947 - 1951 |
| 1943 - 1947 |
| 1939 - 1943 |
| 1935 - 1939 |
| 1931 - 1935 |
| Provincial Governor |
| Jose R. Riano |
| Jose R. Riano |
| Eduardo C. Firmalo |
| Eduardo C. Firmalo |
| Eduardo C. Firmalo |
| Natalio Beltran |
| Perpetuo B. Ylagan |
| Eleandro Jesus F. Madrona |
| Perpetuo B. Ylagan |
| Jose M. Madrid |
| Jose M. Madrid |
| Jose M. Madrid |
| .. |
| .. |
| Vidal F. Fallaria |
| Mateo Ferry |
| Anastacio F. Falejo |
| Martin Fetalino |
| Sergio F. Fondevilla |
| Fausto F. Fallaria |
| Atanacio F. Faminiano |
| Provincial Vice Governor |
| Armand M. Gutierrez |
| Felix F. Ylagan |
| Jose R. Riano |
| Jose R. Riano |
| Manuel Madrid |
| Alice C. Fetalvero |
| Samuel R. Romero |
| Jose Fonte |
