Deutsch 
| Position | Stürmer |
| Nationalität |  |
| Geburtsort | Köln, GER |
| Größe | 191 cm |
| Gewicht | 79 kg |
| Geburtsdatum | 13.10.1998 |
| Jugendmannschaft | EHC Troisdorf |
| Schläger | Links |
| Season | Team | League | GP | G | A | TP | PIM | Playoffs | GP | G | A | TP | PIM | |
| 2011-2012 | Kölner EC U16 | Schüler-BL | 1 | 0 | 0 | 0 | 0 | | | ||||||
| 2012-2013 | Kölner EC U16 | Schüler-BL | 25 | 8 | 6 | 14 | 33 | | | ||||||
| Team Red | IIHF Dev. Camp | 6 | 1 | 1 | 2 | 2 | | | |||||||
| 2013-2014 | Kölner EC U16 | Schüler-BL | 29 | 26 | 23 | 49 | 76 | | | Playoffs | 5 | 2 | 2 | 4 | 2 |
| Kölner EC U18 | DNL | 3 | 1 | 0 | 1 | 2 | | | Playoffs | 1 | 0 | 0 | 0 | 0 | |
| Germany U16 (all) | International-Jr | - | - | - | - | - | | | |||||||
| 2014-2015 | Kölner EC U19 | DNL Q | 18 | 2 | 2 | 4 | 10 | | | ||||||
| Kölner EC U19 | DNL | 19 | 4 | 3 | 7 | 22 | | | Playoffs | 4 | 1 | 0 | 1 | 0 | |
| Germany U17 | Circle K Classic | 1 | 0 | 0 | 0 | 0 | | | Playoffs | 1 | 0 | 0 | 0 | 0 | |
| Germany U16 (all) | International-Jr | - | - | - | - | - | | | |||||||
| Germany U17 (all) | International-Jr | - | - | - | - | - | | | |||||||
| 2015-2016 | Kölner EC U19 | DNL | 44 | 28 | 23 | 51 | 18 | | | ||||||
| Kölner EC U19 | DNL Endrunde | 3 | 0 | 0 | 0 | 0 | | | |||||||
| Germany U18 (all) | International-Jr | - | - | - | - | - | | | |||||||
| 2016-2017 | Kölner EC U19 | DNL | 19 | 7 | 5 | 12 | 48 | | | Playoffs | 4 | 1 | 3 | 4 | 4 |
| Germany U19 (all) | International-Jr | 4 | 0 | 1 | 1 | 0 | | | |||||||
| 2017-2018 | Kölner EC U19 | DNL Q | 1 | 2 | 4 | 6 | 0 | | | ||||||
| Kölner EC U19 | DNL | 8 | 8 | 6 | 14 | 27 | | | |||||||
| EC Bad Nauheim | DEL2 | 46 | 4 | 1 | 5 | 10 | | | Playoffs | 5 | 0 | 0 | 0 | 0 | |
| Germany U20 (all) | International-Jr | 3 | 0 | 1 | 1 | 0 | | | |||||||
| 2018-2019 | EC Bad Nauheim | DEL2 | 50 | 7 | 5 | 12 | 4 | | | Playoffs | 4 | 0 | 0 | 0 | 2 |
| 2019-2020 | EC Bad Nauheim | DEL2 | 49 | 7 | 12 | 19 | 30 | | | Playoffs | 2 | 0 | 0 | 0 | 2 |
| 2020-2021 | Kölner Haie | DEL | 2 | 1 | 0 | 1 | 0 | | | ||||||
| EC Bad Nauheim | DEL2 | 23 | 2 | 3 | 5 | 4 | | | |||||||
| 2021-2022 | Tigers Bayreuth | DEL2 | 36 | 10 | 5 | 15 | 8 | | | Relegation | 9 | 0 | 1 | 1 | 2 |
| 2022-2023 | TuS Wiehl | Germany4 | 10 | 8 | 7 | 15 | 4 | | | ||||||
| 2023-2024 | ESV Bergisch Gladbach | Germany4 | 20 | 27 | 22 | 49 | 16 | | | Playoffs | 7 | 8 | 9 | 17 | 2 |
| 2024-2025 | ESV Bergisch Gladbach | Germany4 | 18 | 27 | 16 | 43 | 22 | | | ||||||
| 2025-2026 | ESV Bergisch Gladbach | Germany4 | 9 | 7 | 4 | 11 | 6 | | |
Marvin Ratmann (* 13. Oktober 1998 in Köln, GER) ist ein deutscher Eishockeyspieler, der seit der Saison 2020/21 bei den Kölner Haien aus der DEL unter Vertrag steht.
