Other
- The stiX, British music project
- Stix, Baer, Fuller, American department store chain (1892–1984)
- Stix, Baer and Fuller F.C., American soccer club (1931–1934)
- STIX Fonts project, providing mathematical symbols
- Stix Would, settlement in Lincolnshire, England
- Stix Would railway station, Lincolnshire, England
- Stix, variant spelling of Styx, river in Greek mythology
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