| William Selden | |
| Position: | Pitcher |
| Birth Date: | October 10, 1866 |
| Birth Place: | Norfolk, Virginia |
| Death Place: | Boston, Massachusetts |
| Debutleague: | Negro league baseball |
| Debutyear: | 1887 |
| Debutteam: | Boston Resolutes |
| Finalyear: | 1899 |
| Finalteam: | Cuban X-Giants |
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William H. Selden (October 10, 1866 - August 26, 1926), alternately spelled "Seldon", was an American pre-Negro league pitcher in the late 1800s.
A native of Norfolk, Virginia, Selden began his professional career in 1887 with the Boston Resolutes. A dominating pitcher, Selden posted a 15–6 record with a 2.63 ERA and 100 strikeouts for the York Monarchs in 1890. He continued to pitch professionally through 1899, and worked as a vaudeville performer during the off-season.[1] Selden died in Boston, Massachusetts in 1926 at age 59.