SIX
| Acronym | Definition |
|---|---|
| SIX | Swiss Exchange |
| SIX | Simple Interface in Xml |
| SIX | Seattle Internet Exchange (est. 1997; Washington) |
| SIX | Soda Is X-Changed (show) |
| SIX | Sine Oculis Homeobox, Drosophila |
| SIX | Slovak Internet Exchange (Slovak University of Technology; Slovakia) |
| SIX | Spatial Information Exchange (Department of Lands; New South Wales, Australia) |
| SIX | Scandinavian Information Exchange |