| KOI | Kirkwall / Orkney Island, Scotland, United Kingdom Kirkwall (Airport Code) | Kirkwall /与苏格兰岛联合王国Kirkwall(机场代码) |
| KOI | Key Outcome Indicator | 关键成果指标 |
| KOI | Kamu Ortakligi Idaresi | Kamu Ortakligi Idaresi公司 |
| KOI | Kirkwall/ Orkney Island, Scotland, UK | Kirkwall /与岛屿,苏格兰,英国 |
| KOI | Kod Obmena Informaticii (code for information exchange) | Kod Obmena Informaticii（信息交换代码） |
| KOI | Kingdom of Insanity (game site) | 疯狂王国（游戏网站） |
| KOI | Kentucky-Ohio-Indiana | 肯塔基州俄亥俄州印第安纳州 |
| KOI | Koderovka Obmyena Informatsee (Coded Information Exchange; Russian Standard) | Koderovka Obmyena Informatsee（编码信息交换；俄罗斯标准） |