| Acronym | Definition |
|---|
| STX➣South Texas (various organizations) |
| STX➣Sales Tax |
| STX➣Shiga Toxin |
| STX➣Studentereksamen (Danish high-school certificate) |
| STX➣Saxitoxin (toxin) |
| STX➣Start of Text |
| STX➣Street Touring X (amateur racing) |
| STX➣Situational Training Exercise |
| STX➣Syntaxin (cell membrane protein) |
| STX➣Syntax |
| STX➣Stub Network |
| STX➣S-Band Transmitter |
| STX➣Smart Text |
| STX➣Short Tagged Xml |
| STX➣Store Index |
| STX➣Seagate Technology |
| STX➣Structured Text |
| STX➣Staff Training Exercise |
| STX➣Store X (6502 processor instruction) |
| STX➣Smarter Technology eXtension |
| STX➣St Croix Island, VI, USA (Airport Code) |
| STX➣Star Trek: X (Nemesis) |
| STX➣Squad Training Exercise |
| STX➣System Technology Excellency (South Korea) |
| STX➣SNA to X.25 |