| Oberbau | track |
| Oberbauch | epigastrium |
| Oberhaut | epidermis |
| Oberhaus | upper house upper chamber House of Lords |
| Oberlauf | headwater upper reaches |
| Bergbau | mining |
| Verbau | shoring |
| Zierbau | folly |
| Obstbau | fruit-growing orcharding pomiculture |
| Oberböse | villain |
| Oberhand | upper hand |
| Oberon | Oberon |
| Oberton | overtone |
| ober | upper above |
| Ober | waiter queen |
| obere | upper |
| oberer | upper |
| oberst | topmost |
| Oberst | colonel |
| Oberarm | upper arm |