9 selections by the Ottawa Senators in the 2003 NHL Entry Draft.
| Year | Pick | Round | Team | Player | Pos | Amateur Club | League | Country |
|---|---|---|---|---|---|---|---|---|
| 2003 | 29 | 1 | Ottawa Senators | Patrick Eaves | RW | Boston College | H-EAST | CAN |
| 2003 | 67 | 2 | Ottawa Senators | Igor Mirnov | F | Dynamo | RUS | RUS |
| 2003 | 100 | 3 | Ottawa Senators | Philippe Seydoux | D | Kloten | SUI | CHE |
| 2003 | 135 | 4 | Ottawa Senators | Mattias Karlsson | D | Brynas | SWEDEN | SWE |
| 2003 | 142 | 5 | Ottawa Senators | Tim Cook | D | River City | USHL | USA |
| 2003 | 166 | 5 | Ottawa Senators | Sergei Gimayev | D | Cherepovets | RUS | RUS |
| 2003 | 228 | 7 | Ottawa Senators | William Colbert | D | Ottawa | OHL | CAN |
| 2003 | 260 | 8 | Ottawa Senators | Ossi Louhivaara | F | Kookoo | FINLAND | FIN |
| 2003 | 291 | 9 | Ottawa Senators | Brian Elliott | G | Ajax | OPJRA | CAN |