| 3. Liga 2018/2019 - Appearances as Referee |  |
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| 04/08/2018 | SG Sonnenhof Großaspach | - | 1. FC Kaiserslautern | 1:1 | 3 | - | - |
| 02/03/2019 | Karlsruher SC | - | VfL Osnabrück | 2:1 | 7 | - | - |
| 3. Liga 2018/2019 - Appearances as Referee | |
|
|
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| 04/08/2018 | SG Sonnenhof Großaspach | - | 1. FC Kaiserslautern | 1:1 | 3 | - | - |
| 02/03/2019 | Karlsruher SC | - | VfL Osnabrück | 2:1 | 7 | - | - |
| Complete name: | Robert Hartmann |
| Born: | 08/09/1979 |
| Place of birth: |
Germany |
| Residence: | Wangen |
| Nationality: |
Germany |
| Profession: | Diplom-Betriebswirt |
| Club: | SV Krugzell |
| Height: | 182 cm |
| Weight: | 80 kg |
| Bundesliga (GER) appearances: | 151 |