FDAI
| Acronym | Definition |
|---|---|
| FDAI | Fédération Départementale des Associations Intermédiaires (French: Departmental Federation of Intermediary Associations) |
| FDAI | Flight Director Attitude Indicator (Apollo spacecraft; US NASA) |
| FDAI | Frédéric Dessaint Aménagement Intérieur (French interior planning company) |