| Quarzuhr | quartz watch quartz clock |
| Quarzit | quartzite |
| Quartier | accommodation quarter |
| Quartär | Quaternary |
| Quarz | quartz |
| Aufruhr | riot turmoil tumult uproar |
| Parkuhr | parking meter |
| Turmuhr | tower clock |
| Quargel | Olomouc cheese |
| Quart | quart |
| Quartil | quartile |
| Aquarium | aquarium tank |
| Quader | cuboid rectangular cuboid rectangular parallelepiped |
| Quadratur | quadrature |
| Quantor | quantifier |
| Quantum | quantum |
| Quark | cottage cheese quark fromage frais |
| Quartal | quarter |
| Quartett | quartet quartette |
| Quasar | quasar |