2003 Eastern League season

The 2003 Eastern League season began on approximately April 1 and the regular season ended on approximately September 1.

The Akron Aeros defeated the New Haven Ravens 3 games to 0 to win the Eastern League Championship Series.

Standings
Notes:
 * Green shade indicates that team advanced to the playoffs
 * Bold indicates that team advanced to ELCS
 * Italics indicates that team won ELCS

Northern Division
The New Haven Ravens defeated the New Britain Rock Cats in the Northern Division playoffs 3 games to 2.

Southern Division
The Akron Aeros defeated the Altoona Curve in the Southern Division playoffs 3 games to 1.

Championship Series
The Akron Aeros defeated the New Haven Ravens in the ELCS 3 games to 0.