Adolph John "Otto" Rettig (January 29, 1894 – June 16, 1977) was a Major League Baseball pitcher who played in 1922 with the Philadelphia Athletics. He started four games, going 1-2 with a 4.91 ERA, walking 12 batters. He pitched 18⅓ innings.
Otto Rettig
| Given name: | Adolph John Rettig |
| Nicknames: | None |
| Primary Pos: | Pitcher |
| Hght/Wght: | 5'11" / 165 lbs |
| Bats/Throws: | R / R |
| Born: | Jan 29, 1894 in New York, NY |
| Died: | Jun 16, 1977 in Stuart, FL (83 years old) |
| Debut: | Jul 19, 1922 |