| William Wickham Welch | |
| Birth Date: | 10 December 1818[1] |
| Birth Place: | Norfolk, Connecticut |
| Death Date: | [2] |
| Death Place: | Norfolk, Connecticut |
| Restingplace: | Center Cemetery |
| Office: | Member of the United States House of Representatives from Connecticut's 4th congressional district |
| Term Start: | March 4, 1855 |
| Term End: | March 3, 1857 |
| Predecessor: | Origen S. Seymour |
| Successor: | William D. Bishop |
| Office2: | Member of the Connecticut Senate from the 17th district |
| Term Start2: | 1851 |
| Term End2: | |
| Office3: | Member of the Connecticut House of Representatives |
| Term Start3: | 1848 |
| Term End3: | 1850 |
| Term Start4: | 1869 |
| Term End4: | |
| Term Start5: | 1881 |
| Term End5: | |
| Party: | American Party |
| Alma Mater: | Yale College (medicine, 1839) |
| Occupation: | physician |
| Spouse: | Emeline Collins(m. November 7, 1845), Emily Sedgwick (May 22, 1866) |
William Wickham Welch (December 10, 1818 – July 30, 1892) was an American Party member of the United States House of Representatives from Connecticut's 4th congressional district from 1855 to 1857.
Born in Norfolk, Connecticut, Welch studied medicine. He was the son of Dr. Benjamin Welch[1] and Elizabeth Loveland Welch.[2] He was graduated from the medical department of Yale College in 1839 and commenced practice in Norfolk.
He served as member of the Connecticut House of Representatives from 1848 to 1850. He served in the Connecticut Senate in 1851 and 1852.
Welch served as a member of the Thirty-fourth Congress from March 4, 1855 to March 3, 1857. After his term, he resumed the practice of his profession.
He was again a member of the Connecticut House of Representatives in 1869 and 1881.
He died in Norfolk, Connecticut, July 30, 1892. He was interred in Center Cemetery.