Thomas Mercer
| Thomas Mercer | |
|---|---|
| Thomas Mercer c. 1890 | |
| King County Commissioner | |
| In office January 1, 1854 – July 1, 1858 | |
| Preceded by | Arthur A. Denny | 
| Succeeded by | John H. Nagle | 
| Personal details | |
| Born | March 11, 1813 Harrison County, Ohio, U.S. | 
| Died | May 25, 1898 (aged 85) Seattle, Washington, U.S. | 
Judge Thomas Mercer (March 11, 1813 – May 25, 1898) was a pioneer associated with the early history of Seattle. Seattle's Mercer Street and Mercer Island in Lake Washington bear his name.