| Mark Creegan | |
| Position: | Outfielder |
| Birth Date: | 31 July 1864 |
| Birth Place: | San Francisco, California, U.S. |
| Death Place: | San Francisco, California, U.S. |
| Bats: | Unknown |
| Throws: | Unknown |
| Debutleague: | MLB |
| Debutdate: | April 17 |
| Debutyear: | 1884 |
| Debutteam: | Washington Nationals |
| Finalleague: | MLB |
| Finaldate: | May 11 |
| Finalyear: | 1884 |
| Finalteam: | Washington Nationals |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat2label: | Hits |
| Stat3label: | RBIs |
| Stat1value: | .152 |
| Stat2value: | 5 |
| Stat3value: | 4 |
| Teams: | |
Mark Creegan (born as Mark Kragen) (July 31, 1864 – September 29, 1920) was an American Major League Baseball outfielder who played in nine games for the 1884 Washington Nationals of the Union Association. He also played for a number of different minor league teams in his home town of San Francisco.