Sisu Terminal Systems
| Sisu Magnum-Sisu Magnum | |
| Company type | Osakeyhtiö |
| Industry | automotive |
| Founded | 1969 as LOB 1989 as business unit 1994 as limited company |
| Defunct | 1997 |
| Fate | Acquired by Partek |
| Successor | Kalmar (Cargotec) |
| Headquarters | |
Number of locations | Hämeenlinna 1969–1996 Tampere 1996–1997 |
Area served | worldwide |
Key people | Christer Schalin, Veikko Muronen, Bertel Lindberg |
| Products | terminal tractors and compatible trailers |
Production output | ca. 2,600 units |
| Parent | Oy Suomen Autoteollisuus Ab / Oy Sisu-Auto Ab / Sisu Corporation |
Sisu Terminal Systems Oy (STS) was a Finnish terminal tractor producer. The production began in 1969 as a part of Suomen Autoteollisuus (SAT) and the first vehicles were based on lorry components. The portfolio grew by time. The production facilities were in Hämeenlinna until the mid 1990s, when they were moved to Tampere. The company produced terminal tractors also in Texas under the name Magnum in 1987–2005.
STS became a limited liability company in 1994 and was sold and restructured in 1997. Subsequently, the Sisu brand was replaced by Kalmar.