Otto Wolff
| Industry | metal industry |
|---|---|
| Founded | 1904 in Cologne, Germany |
| Founder | Otto Wolff |
| Defunct | 1990 |
| Successor | August Thyssen-Hütte |
| Products | Steel |
Otto Wolff AG was a German steelmaker founded in Cologne by the industrialists Otto Wolff and Ottmar E. Strauß in 1904. One of the largest businesses in pre-war Germany, it exists today as an independent subsidiary of the ThyssenKrupp group.