| APAT | Association Patronale Transfrontaliere (French: Cross-border employers' association) | Transfrontaliere Patronale协会(法国:跨境雇主协会) |
| APAT | Amateur Poker Association & Tour | 业余的扑克协会之旅 |
| APAT | A P A Optics, Inc. | A P A光学公司。 |
| APAT | Advanced Portable Analysis Tool | 高级便携式分析工具 |
| APAT | Additional Production Acceptance Test | 附加生产验收测试 |