RL
- Acura RL
- Congressional Research Service Report
- R. L. Huggar
- R. L. Stine
- RL (complexity)
- RL Grime
- RL circuit
- Radio Liberty
- Ralph Lauren Corporation
- Real life
- Reduced level
- Registered Locksmith
- Reinforcement learning
- Rhyncholaelia
- Rl (digraph)
- Rocket League
- Roxbury Latin School
- Royal Phnom Penh Airways
- Rugby league
- Réseau Luxembourgeois des Amateurs d'Ondes Courtes