The 2017–18 DEL2 season was the fifth season since the founding of the DEL2, the second tier of German ice hockey, set below the Deutsche Eishockey Liga. The season ran from 15 September 2017 till 22 April 2018. SC Riessersee was crowned league premiers by finishing top of the regular season standings. Bietigheim Steelers claimed the championship title by defeating SC Riessersee 4-1 in the final series. lost the relegation playoffs 4-1 against promoted team Tölzer Löwen, however they were saved from relegation from DEL2 to Oberliga due to SC Riessersee not being granted a DEL2 licence in the summer of 2018.