| Acronym | Sense | Language | Topics | 
|---|---|---|---|
| RAI | Rencontre Assyriologique Internationale | In French | → Archeology | 
| RAI | Mouvement des Jeunes Socialistes (www.mjsfrance.org) | In French | → Socialist parties | 
| RAI | Radio Audizioni Italiane (www.rai.it) | In Italian | → Telecommunications → Italia  | 
| RAI | Radar Altimeter Indicator | In English | → Aeronautics, aircraft → Astronautics  | 
| RAI | Review Action Item | In English | |
| RAI | Roll Attitude Indicator | In English | → Astronautics | 
| RAI | Radiotelevisione Italiana (www.rai.it) | In Italian | → Telecommunications → Italia  | 
| RAI | Rijwiel en Automobiel Industrie | In Dutch | → Automobile manufacturing | 
| RAI | Résultat Avant Impôt | In French | → Accounting → Taxes, duties  | 
| RAI | República Árabe do Iémen = JAR | Jemenitische Arabische Republik | In German = YAR | Yemen Arab Republic | In German = JAR | Jemenitische Arabische Republiek | In Dutch = RAY | République Arabe du Yémen | In French  | 
In Portuguese | → Geography |