| State1: | Alabama |
| District1: | 5th |
| Term Start1: | March 4, 1885 |
| Term End1: | March 3, 1887 |
| Predecessor1: | Thomas Williams |
| Successor1: | James E. Cobb |
| Birth Name: | Thomas William Sadler |
| Birth Date: | 17 April 1831 |
| Birth Place: | Russellville, Alabama |
| Death Place: | Prattville, Alabama |
| Party: | Democratic |
Thomas William Sadler (April 17, 1831 - October 29, 1896) was a U.S. Representative from Alabama.
Born near Russellville, Alabama, Sadler moved with his parents to Jefferson County, Alabama, in 1833.He pursued an academic course.He moved to Autauga County, Alabama, in 1855 and engaged in mercantile pursuits.During the Civil War volunteered and served in the division of the Confederate States Army[1] commanded by Gen. Joseph Wheeler.He engaged in agricultural pursuits.He studied law.He was admitted to the bar in 1867 and commenced practice in Prattville, Alabama.County superintendent of education 1875-1884.
Sadler was elected as a Democrat to the Forty-ninth Congress (March 4, 1885 – March 3, 1887).He was an unsuccessful candidate for renomination in 1886.He resumed the practice of law.He died in Prattville, Alabama, October 29, 1896.He was interred in Oak Hill Cemetery.