2002–03 Cuban National Series
The 42nd Cuban National Series belonged to Industriales, who rode a 66-23 regular season into the playoffs, where they lost only two games before sweeping Villa Clara Naranjas in the final for their ninth title.
Regular season standings
Western zone
| Team | W | L | Pct. |
| Industriales | 66 | 23 | .742 |
| Cienfuegos | 52 | 38 | .578 |
| La Habana | 51 | 39 | .567 |
| Sancti Spíritus | 49 | 41 | .544 |
Eastern zone
| Team | W | L | Pct. |
| Granma | 45 | 45 | .500 |
| Santiago de Cuba | 44 | 46 | .489 |
| Holguín | 43 | 47 | .478 |
| Guantánamo | 28 | 62 | .311 |