| Thomas Dyer | |
| Birth Date: | 13 January 1805 |
| Birth Place: | Canton, Connecticut, U.S. |
| Death Place: | Middletown, Connecticut, U.S. |
| Resting Place: | Graceland Cemetery |
| Residence: | Chicago, Illinois |
| Office: | Mayor of Chicago |
| Order: | 18th |
| Term Start: | March 11, 1856[1] |
| Term End: | March 10, 1857[2] |
| Predecessor: | Levi Boone |
| Successor: | John Wentworth |
| Party: | Democratic |
| Signature: | Signature of Thomas Dyer (1805–1862).png |
Thomas Dyer (January 13, 1805June 6, 1862) served as mayor of Chicago, Illinois (1856–1857) for the Democratic Party. He also served as the founding president of the Chicago Board of Trade.
Thomas Dyer was born in Canton, Connecticut on January 13, 1805.[3]
He was a meat-packing partner of former mayor John Putnam Chapin, who was one of Chicago's first meat packers. Chapin built a slaughterhouse on the South Branch of the Chicago River in 1844.[4]
Running as a "pro-Nebraska" Democrat (aligned with Stephen A. Douglas, who publicly backed his candidacy), Dyer won the contentious 1856 Chicago mayoral election, defeating former mayor Francis Cornwall Sherman (who ran as an anti-Nebraska candidate).[5] [6]
He died in Middletown, Connecticut on June 6, 1862, and was buried at Graceland Cemetery in Chicago.[3]