The 2003 European Junior Swimming Championships were held in Glasgow 31 July-3 August.
|- | 50 m freestyle<br>
|- | 100 m freestyle<br>
|- | 200 m freestyle<br>
|- | 400 m freestyle<br>
|- | 1500 m freestyle<br>
|- | 50 m backstroke<br>
|- | 100 m backstroke<br>
|- | 200 m backstroke<br>
|- | 50 m breaststroke<br>
|- | 100 m breaststroke<br>
|- | 200 m breaststroke<br>
|- | 50 m butterfly<br>
|- | 100 m butterfly<br>
|- | 200 m butterfly<br>
|- | 200 m individual medley<br>
|- | 400 m individual medley<br>
|- | freestyle relay<br>
|- | freestyle relay<br>
|- | medley relay<br>
|- | 50 m freestyle<br>
|- | 100 m freestyle<br>
|- | 200 m freestyle<br>
|- | 400 m freestyle<br>
|- | 800 m freestyle<br>
|- | 50 m backstroke<br>
|- | 100 m backstroke<br>
|- | 200 m backstroke<br>
|- | 50 m breaststroke<br>
|- | 100 m breaststroke<br>
|- | 200 m breaststroke<br>
|- | 50 m butterfly<br>
|- | 100 m butterfly<br>
|- | 200 m butterfly<br>
|- | 200 m individual medley<br>
|- | 400 m individual medley<br>
|- | freestyle relay<br>
|- | freestyle relay<br>
|- | medley relay<br>