| Returnboard | return board |
| Returner | returner |
| Storyboard | storyboard |
| retrograd | retrograde |
| Türband | hinge |
| Stirnband | headband |
| Mainboard | mainboard motherboard system board |
| Protoboard | breadboard |
| Steckboard | breadboard |
| Keyboard | keyboard |
| Motherboard | mainboard motherboard system board |
| Bernhard | Bernard |
| Reinhard | Raynard Reynard |
| Retainer | retainer |
| Retina | retina |
| Retortenbaby | test tube baby |
| Retronym | retronym |
| Tretkurbelarm | crankarm |
| retro- | retro- |
| Retarder | retarder |