| Acronym | Sense | Language | Topics |
|---|---|---|---|
| RAI | Rencontre Assyriologique Internationale | In French | → Archeology |
| RAI | Mouvement des Jeunes Socialistes | In French | → Political parties and movements |
| RAI | Radio Audizioni Italiane | In Italian | → Telecommunications |
| RAI | Radar Altimeter Indicator | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| RAI | Review Action Item | In English | |
| RAI | Roll Attitude Indicator | In English | |
| RAI | Radiotelevisione Italiana | In Italian | → Telecommunications |
| RAI | Rijwiel en Automobiel Industrie | In Dutch | → Automobile manufacturing |
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