| Competition: | Regionalliga |
| Season: | 2004–05 |
| Promoted: | Eintracht Braunschweig SC Paderborn 07 Kickers Offenbach Sportfreunde Siegen |
| Relegated: | KFC Uerdingen 05 Borussia Dortmund II VfL Wolfsburg II Arminia Bielefeld II 1. FC Union Berlin 1. SC Feucht 1. FSV Mainz 05 II FC Nöttingen |
| Prevseason: | 2003–04 |
| Nextseason: | 2005–06 |
The 2004–05 Regionalliga season was the eleventh season of the Regionalliga at tier three of the German football league system. It was contested in two geographical divisions with eighteen teams in the south and nineteen in the north. The champions, Eintracht Braunschweig and Kickers Offenbach, and the runners-up, SC Paderborn 07 and Sportfreunde Siegen, of every division were promoted to the 2. Bundesliga.
11. FC Saarbrücken were promoted due to FC Bayern Munich II being a reserve side which are barred from promotion to the 2. Bundesliga.
| Pos | Player | Team | Goals |
|---|---|---|---|
| 1 |  Ahmet Kuru | Eintracht Braunschweig | 24 |
| 2 |  Giovanni Federico | 1. FC Köln II | 20 |
 Thomas Reichenberger | VfL Osnabrück | 20 | |
| 3 | Alexander Löbe | SC Paderborn 07 | 17 |
| 4 | Markus Feldhoff | VfL Osnabrück | 16 |
| 5 | Mustafa Kucukovic | Hamburger SV II | 14 |
| Markus Kullig | VfB Lübeck | 14 | |
| Sejad Salihović | Hertha BSC II | 14 | |
| 6 | Mahir Sağlık | Borussia Dortmund II | 13 |
| 7 |  Ryan Coiner | 1. FC Union Berlin | 12 |
| Dustin Heun | KFC Uerdingen 05 | 12 | |
| Sven Kretschmer | Hertha BSC II | 12 | |
| 8 | Daniel Graf | Eintracht Braunschweig | 11 |
| Lars Kampf | VfB Lübeck | 11 | |
| Tobias Schweinsteiger | VfB Lübeck | 11 |
| Pos | Player | Team | Goals |
|---|---|---|---|
| 1 | Patrick Helmes | Sportfreunde Siegen | 21 |
| 2 | Vitus Nagorny | SV 07 Elversberg | 18 |
| 3 | Mark Römer | FC Augsburg | 17 |
| 4 | Suat Türker | Kickers Offenbach | 16 |
| 5 | Mario Gomez | VfB Stuttgart II | 15 |
| Sascha Maier | SC Pfullendorf | 15 | |
| 6 | Suad Rahmanovic | Stuttgart Kickers | 14 |
| 7 |  Laszlo Kanyuk | Kickers Offenbach | 13 |
 Christian Okpala | FC Augsburg | 13 | |
| 8 | Nicky Adler | TSV 1860 Munich II | 12 |
| Danko Boskovic | SV Wehen | 12 | |
| Sasa Ciric | Kickers Offenbach | 12 | |
| 9 | Nico Beigang | SV Darmstadt 98 | 11 |
 Miguel Coulibaly | VfR Aalen | 11 |