| John N. Sylvester | |
| Office: | 25th Speaker of the Washington House of Representatives |
| Term Start: | January 9, 1939 |
| Term End: | January 13, 1941 |
| Predecessor: | Edward J. Reilly |
| Successor: | Edward J. Reilly |
| Office1: | Member of the Washington House of Representatives for the 37th district |
| Term1: | 1937 - 1941 |
| Birth Date: | 8 June 1909 |
| Birth Place: | Pasco, Washington, United States |
| Death Place: | Washington, United States |
| Party: | Democratic |
John Nixon Sylvester (June 8, 1909 - February 1, 1993) was an American politician in the state of Washington. He served in the Washington House of Representatives from 1937 to 1941.[1] He was Speaker of the House from 1939 to 1941.[2]