OAD
OAD is an abbreviation for:
- Offenbach Archival Depot , central collection point in the American zone of occupation for archive and library items
- On Air Design , the visual appearance of a television station or broadcast
- Ordo Augustiniensium Discalceatorum , a Catholic male order, see Augustinian Discalceaten
- Original animation DVD , supplements to manga volumes, see original video animation
- Oral anti-diabetic drug