| Horatio Munn | |
| Position: | Second baseman |
| Bats: | Unknown |
| Throws: | Unknown |
| Birth Date: | 26 July 1851 |
| Birth Place: | Newark, New Jersey |
| Death Place: | Brooklyn, New York |
| Debutleague: | MLB |
| Debutdate: | September 4 |
| Debutyear: | 1875 |
| Debutteam: | Brooklyn Atlantics |
| Finalleague: | MLB |
| Finaldate: | September 6 |
| Finalyear: | 1875 |
| Finalteam: | Brooklyn Atlantics |
| Statleague: | MLB |
| Stat1label: | At bats |
| Stat1value: | 4 |
| Stat2label: | RBI |
| Stat2value: | 0 |
| Stat3label: | Home runs |
| Stat3value: | 0 |
| Stat4label: | Batting average |
| Stat4value: | .000 |
| Teams: | |
Horatio Brinsmade Munn (1851-1910) was an American professional baseball player who played second base for the 1875 Brooklyn Atlantics.