| IRRT | International Regulatory Review Team | 国际监管审查小组 |
| IRRT | Intel Rapid Recovery Technology | Intel快速恢复技术 |
| IRRT | Independent Readiness Review Team | 独立准备审查小组 |
| IRRT | Industrial Relations Research Trust (Dublin, Ireland) | 劳资关系研究信托基金（爱尔兰都柏林） |
| IRRT | Intermittent Renal Replacement Therapy | 间歇性肾脏替代治疗 |