Andrew Jackson Thayer | |
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| Member of the U.S. House of Representatives from Oregon's At-large district | |
| In office March 4, 1861 – July 30, 1861 | |
| Preceded by | Lansing Stout |
| Succeeded by | George K. Shiel |
| 21st Justice of the Oregon Supreme Court | |
| In office 1870–1873 | |
| Preceded by | John Kelsay |
| Succeeded by | Lafayette F. Moser |
| Personal details | |
| Born | November 27, 1818 Lima, New York |
| Died | April 28, 1873 (aged 54) Corvallis, Oregon |
| Political party | Democratic |
| Spouse | Melissa D. Chandler[1] |
Andrew Jackson Thayer (November 27, 1818 – April 28, 1873) was an attorney and Democratic U.S. congressman from Oregon. A native of New York state, he previously worked as the U.S. Attorney for Oregon. His brother was William W. Thayer, a governor of Oregon. After Congress, Thayer returned to legal work and served as a district attorney and justice of the Oregon Supreme Court.