| Guy McFadden | |
| Position: | First baseman |
| Bats: | Unknown |
| Throws: | Unknown |
| Birth Date: | September 3, 1872 |
| Birth Place: | Topeka, Kansas |
| Death Place: | Topeka, Kansas |
| Debutleague: | MLB |
| Debutdate: | August 24 |
| Debutyear: | 1895 |
| Debutteam: | St. Louis Browns |
| Finalleague: | MLB |
| Finaldate: | August 28 |
| Finalyear: | 1895 |
| Finalteam: | St. Louis Browns |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .214 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | Runs batted in |
| Stat3value: | 2 |
| Teams: |
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Guy G. McFadden (September 3, 1872 – March 10, 1911) was a first baseman for the St. Louis Browns of the National League in 1895. His professional career also included stops in the Southwest League (1891), Western Association (1893–1894), Western Interstate League (1895), Eastern Iowa League (1895), Southern Association (1896) and Canadian League (1899).