Cities where you can find McDonald's branches
- O'Connor (1)
- Oak Park (1)
- Oakleigh South (1)
- Oakleigh (1)
- Ocean Grove (1)
- Officer (3)
- Old Noarlunga (1)
- Ooralea (1)
- Oran Park (1)
- Orana (1)
- Orange (2)
- Ormeau (1)
- Ormiston (1)
- Ormond (1)
- Oxenford (3)
- Oxford Falls (1)
- Oxley (1)