| John A. Bagnariol | |
| Office: | 39th Speaker of the Washington House of Representatives |
| Term Start: | January 10, 1977 |
| Term End: | January 12, 1981 |
| Alongside: | Duane Berentson (1979–1981) |
| Predecessor: | John L. O'Brien (acting) |
| Successor: | William M. Polk |
| Office1: | Member of the Washington House of Representatives |
| Constituency1: | 11th |
| Term Start1: | January 8, 1973 |
| Term End1: | January 12, 1981 |
| Predecessor1: | Vaughn Hubbard |
| Successor1: | Michael E. Patrick |
| Constituency2: | 35th |
| Term Start2: | January 9, 1967 |
| Term End2: | January 8, 1973 |
| Predecessor2: | Fred R. Mast |
| Successor2: | John L. O'Brien |
| Birth Name: | John Angelo Bagnariol |
| Birth Date: | 23 January 1932 |
| Birth Place: | Renton, Washington, U.S. |
| Death Place: | Renton, Washington, U.S. |
| Party: | Democratic |
John Angelo Bagnariol (January 23, 1932 – December 6, 2009) was an American politician in the state of Washington. He served in the Washington House of Representatives from 1977 to 1981 (from 1979 to 1981, he was co-speaker with Duane Berentson).[1] He was Speaker of the House from 1965 to 1967.[2]
Bagnariol was convicted of racketeering charges during the FBI investigation called GAMSCAM which was looking into bribery of state officials to expand gambling operations. he was found guilty and sentenced to five years in prison. (1980)[3] [4]