| Marshall Locke | |
| Position: | Outfielder |
| Bats: | Unknown |
| Throws: | Unknown |
| Birth Date: | 12 March 1857 |
| Birth Place: | Ashland, Ohio |
| Death Place: | Ashland, Ohio |
| Debutleague: | MLB |
| Debutdate: | July 5 |
| Debutyear: | 1884 |
| Debutteam: | Indianapolis Hoosiers |
| Finalleague: | MLB |
| Finaldate: | July 20 |
| Finalyear: | 1884 |
| Finalteam: | Indianapolis Hoosiers |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .241 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | Runs batted in |
| Stat3value: | 5 |
| Teams: |
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Marshall Pinkney Wilder Locke (March 12, 1857 – March 6, 1940) was a Major League Baseball outfielder for the 1884 Indianapolis Hoosiers.