- Profession: Violinist.
- Relation to Mahler: Worked with Gustav Mahler.
- Correspondence with Mahler:
- Born: Unknown.
- Died: Unknown.
- Buried: Unknown.
- 1878 Concert Vienna 11-07-1878 – Piano quintet (Premiere, piano).
Stefan Wahl and Johann Kreuzinger both joined the Vienna State Opera Orchestra, and were still active during Mahlers tenure as the Opera’s director.