List of oldest Major League Baseball players
This is a list of the oldest Major League Baseball players, with their last season in parentheses. Only baseball players who played at least one game when they were older than 45 are included on the list. Active are players in bold type.
All time
| ^ | Denotes player who is still active in the MLB as of the season |
| * | Denotes player who has been inducted to the Baseball Hall of Fame |
| † | Denotes player who is not yet eligible for Hall of Fame consideration |
Note: Paige, O'Leary, O'Rourke, Jennings, Street, McGuire and Evers each made one token major league appearance years after their careers had otherwise ended. The careers of Altrock, Miñoso and Latham had also effectively ended many years before their final major league appearances, though each were brought back for token appearances several times before their final game. Julio Franco is the oldest position player to appear regularly.
Active
| Player | Pos | Birth date | Age | Team played | Ref. |
| DH/1B | |||||
| P | |||||
| DH/RF | |||||
| P | |||||
| P | St. Louis Cardinals | ||||
| OF/DH | |||||
| C | St. Louis Cardinals | ||||
| P | |||||
| 2B | |||||
| P | |||||
| DH/1B | |||||
| P | |||||
| P | |||||
| C | |||||
| C | |||||
| RF/DH | |||||
| DH/1B | |||||
| P | |||||
| 2B | |||||
| C | |||||
| C | |||||
| 2B | Boston Red Sox | ||||
| P | |||||
| OF | New York Yankees | ||||
| 1B | Cincinnati Reds | ||||
| C | |||||
| P | |||||
| P | |||||
| LF | Milwaukee Brewers | ||||
| RF | |||||
| P |
Oldest players in the postseason
- Note: Phil Niekro's start came in the first game of the 1982 NLCS. However, with the Braves leading the St. Louis Cardinals 1–0, the game was delayed on account of rain. When the rain did not clear, the game was called three outs before it could be considered official, and was restarted the following night with Braves pitcher Pascual Pérez getting the start. The Braves would lose the game 7–0.