| William Hyndman | |
| Position: | Outfielder / Pitcher |
| Bats: | Unknown |
| Throws: | Unknown |
| Birth Date: | October 1, 1854 |
| Birth Place: | Philadelphia |
| Death Place: | Philadelphia |
| Debutleague: | MLB |
| Debutdate: | July 23 |
| Debutyear: | 1886 |
| Debutteam: | Philadelphia Athletics |
| Finalleague: | MLB |
| Finaldate: | July 23 |
| Finalyear: | 1886 |
| Finalteam: | Philadelphia Athletics |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .000 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | Runs batted in |
| Stat3value: | 0 |
| Teams: | |
William S. Hyndman (October 1, 1854 – January 14, 1920) was an American baseball player who played for the 1886 Philadelphia Athletics.