| William E. Merry | |
| State Senate: | South Dakota |
| State: | South Dakota |
| District: | 10th |
| Term Start: | 1927 |
| Term End: | 1928 |
| Party: | Republican |
| Birth Date: | 6 March 1861 |
| Birth Place: | Royalton, Wisconsin |
| Death Place: | Dell Rapids, South Dakota |
| Spouse: | Reefa Mable Hart |
William E. Merry (March 6, 1861 – February 4, 1941) was a member of the South Dakota House of Representatives.
Merry was born William Edgar Merry on March 6, 1861 in Royalton, Wisconsin.[1] He moved to Dell Rapids, South Dakota in 1873.
On November 27, 1888, Merry married Reefa Hart. They would have four children before she died on January 27, 1924. He later married Lulu Blackman on June 2, 1926. Merry died on February 4, 1941. He was a Baptist.
His brother, George, was also a member of the South Dakota House of Representatives.
Merry was a member of the House of Representatives from 1927 to 1928. He was a Republican.