| Name | PLZ | Ort |
| O'Curry | 30159 | Hannover |
| OASE | 59821 | Arnsberg |
| Oasis | 47798 | Krefeld |
| Olga | 73630 | Remshalden |
| Olivengarten | 83022 | Rosenheim |
| OLIVER'S STOP | 73563 | Mögglingen |
| Olivers Pizza | 22081 | Hamburg |
| Oliviers Bistro & Cafe | 20259 | Hamburg |
| Olli's Lagune Bistro | 49661 | Cloppenburg |
| One Way Bistro | 70173 | Stuttgart |
| Op'm Spukbonn | 38700 | Braunlage |
| Operncafé | 60313 | Frankfurt |
| Orient Express | 80802 | München |
| Orlando Bistro | 80331 | München |
| Oskay's Bistro | 35279 | Neustadt |
| Outback | 51789 | Lindlar |
| Oxn | 74653 | Künzelsau |
| Ozan's Imbistro | 30161 | Hannover |