| Club: | Atalanta |
| Season: | 2003–04 |
| Chairman: | Ivan Ruggeri |
| Manager: | Andrea Mandorlini |
| League: | Serie B |
| League Result: | 5th |
| League Topscorer: | Carmine Gautieri, Igor Budan (11) |
| Cup2: | Coppa Italia |
| Cup2 Result: | First Round |
| Prevseason: | 2002–03 |
| Nextseason: | 2004–05 |
Atalanta B.C. was promoted to Serie A, despite finishing only 5th in Serie B. The reason for the promotion was the expansion of the top domestic division from 18 to 20 teams. That offered a reprieve to an underperforming Atalanta side that failed to keep up with Palermo following Christmas.
Gianpaolo Bellini Natale Gonnella Duccio Innocenti Stefano Lorenzi Fabio Rustico
Santos
Mohamed Sarr Antonio Bernardini Andrea Lazzari Michele Marcolini Nicola Mingazzini Riccardo Montolivo Biagio Pagano Alex Pinardi Damiano Zenoni