FFX
| Acronym | Definition |
|---|---|
| FFX | Final Fantasy 10 (aka Final Fantasy X; game) |
| FFX | Full Effects |
| FFX | Fast Effects |
| FFX | Final Fantasy X |
| FFX | Find Fast Index |
| FFX | Mozilla Firefox (Mozilla browser) |
| FFX | Fairfax Connector (Fairfax County, Virginia transit provider) |
| FFX | Final Fantasy Extreme |
| FFX | Fast Frigate (Star Fleet Battles) |
| FFX | Fairfax, Virginia, USA |