O’Charley’s
Oasis
Oberweis
OEC
Off The Hook
Oggi’s
OIP
Oishi
Old Chicago
Old Ebbitt Grill
Old Spaghetti Factory
Olga’s Kitchen
Olive Garden
Ollie
On The Border
Ono Hawaiian BBQ
Oregano’s
Oriental Express
Original Pancake House
Osaka
Outback Steakhouse