| William Theophilus Dortch | |
| Office: | Confederate States Senator from North Carolina |
| Term Start: | February 18, 1862 |
| Term End: | May 10, 1865 |
| Predecessor: | Constituency established |
| Successor: | Constituency abolished |
| Office2: | 47th Speaker of the North Carolina House of Commons |
| Term Start2: | 1860 |
| Term End2: | 1861 |
| Preceded2: | Thomas Settle Jr. |
| Succeeded2: | Nathan N. Fleming |
| Office3: | Member of the North Carolina House of Commons from Wayne County |
| Term Start3: | 1852 |
| Term End3: | 1861 |
| Preceded3: | Curtis H. Brogden |
| Succeeded3: | B. B. Rives |
| Birth Date: | 23 August 1824 |
| Birth Place: | Nash County, North Carolina |
| Death Place: | Goldsboro, North Carolina |
| Party: | Democratic |
William Theophilus Dortch (August 23, 1824 - November 21, 1889) was an American politician who served as a Confederate States senator from North Carolina from 1862 to 1865. He also served as Speaker of the North Carolina House of Representatives. He served in the North Carolina Senate from 1879 to 1885.
Dortch was born August 23, 1824 to William Dortch and his wife, Drusilla at his father's plantation, situated in Nash County, North Carolina about 5 miles from the town of Rocky Mount, North Carolina.
Dortch was a member of the North Carolina General Assembly from 1852 to 1861. In 1860 Dortch served as Speaker of the House of Commons. During the Civil War, Dortch served as a senator from North Carolina in the First Confederate Congress and the Second Confederate Congress (from 1862 to 1865). During his term, Dortch was accused of sexual improprieties with a minor, but was exonerated after an investigation. After the war, he again served in the legislature, first in the North Carolina House of Representatives, and then in the North Carolina Senate from 1879 to 1885. He was President pro tempore of that body from 1881 to 1883.
Dortch died November 21, 1889 in Goldsboro, North Carolina and was buried in Willow Dale Cemetery.
Dortch married Elizabeth Pittman of Edgecombe County, North Carolina, they had seven children. Dortch later married Hattie Williams of Berryville, Virginia, they had four children.
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