| EFX | Elite Force Xtreme (gaming) | Elite Force Xtreme(游戏) |
| EFX | Effects (as in motion picture special effects; sometimes just FX) | 效果(如电影特效;有时只是FX) |
| EFX | Emitter File Index | 发射器文件索引 |
| EFX | Efficient XML | 高效的XML |
| EFX | EFfect eXtenstion | E效果扩展 |
| EFX | Expeditionary Force Exercise | 远征军演习 |
| EFX | Elite Force Expansion (Star Trek Voyager) | 精英部队扩展(星际迷航旅行者) |
| EFX | Elliptical Fitness Crosstrainer | 椭圆健身交叉训练器 |
| EFX | Fax (Everex EFax) | 传真(Everex EFax) |
| EFX | Equifax, Inc. | Equifax公司。 |
| EFX | Expeditionary Force Experiment | 远征军实验 |
| EFX | Electronic Fax Document (file extension) | 电子传真文件(文件扩展名) |