- roaming reaction
- Roamnce at the Turning of Five Dynasties and Northern Song
- Roar, China
- Roar Chinese
- roaring
- Roaring Flame of the Eastern Battlefield
- roaring in equine
- Roar! The Yellow River
- roasted eel processing equipment
- roasted fish fillet processing equipment
- roasted green tea
- roast eel
- roaster
- roasting
- roasting of mineral raw material
- roasting process control system
- roatary singing
- Roatán
- Robben Island
- robbery
- Robbia family
- Robbins
- Robbins algebra
- Robbins axiom
- Robbins conjecture