| RIAT | Royal International Air Tattoo | 英国皇家国际航空展示会 |
| RIAT | Rede de Informação E AssistÊncia TÉcnica | Rede de Informação E AssistÊncia TÉcnica |
| RIAT | Risk, Intelligence and Analysis Team (UK) | 风险、情报和分析团队（英国） |
| RIAT | Radio Immuno Assay Technology | 放射免疫分析技术 |
| RIAT | Runway Incursion and Surface Error Prevention Team | 跑道侵入和地面错误预防小组 |
| RIAT | Record ID Attribute Table | 记录ID属性表 |
| RIAT | Reserve Industrial Augmentation Team | 储备工业扩充团队 |
| RIAT | Reuse Issues Action Team | 重用问题行动小组 |
| RIAT | Rwanda Interagency Assessment Team | 卢旺达机构间评估小组 |
| RIAT | Roundtable on Information Access and Technology | 信息获取和技术圆桌会议 |
| RIAT | Royal International Air Tatoo | 塔图皇家国际航空公司 |
| RIAT | Risk Intelligence and Analysis Team | 风险情报和分析团队 |
| RIAT | Radio-Immune Antiglobulin Test | 放射免疫抗球蛋白试验 |
| RIAT | Rapid Impact Assessment Team | 快速影响评估团队 |
| RIAT | Runway Incursion Action Team | 跑道侵入行动小组 |
| RIAT | Raising Individual Achievement Team | 培养个人成就团队 |
| RIAT | Research Institute for Advanced Technology | 先进技术研究所 |
| RIAT | Reasons for Not Intensifying Antihypertensive Treatment | 不加强降压治疗的原因 |
| RIAT | Russian International Academy for Tourism | 俄罗斯国际旅游学院 |
| RIAT | Record Identification Attribute Table | 记录标识属性表 |
| RIAT | Rogue International Arms Trader | 流氓国际军火商 |