RL

RL, Rl or rl may refer to:

• Rl (digraph), a digraph in Australian Aboriginal languages representing a retroflex lateral
• RL (complexity), the complexity class of problems
• NL (complexity) or RL, another complexity class
• Radio Liberty, American political broadcasting station merged with Radio Free Europe
• Republic of Lebanon, a country
• RL circuit, a circuit with a resistor and an inductor
• Acura RL, an automobile
• ReLoad, 1997 album by Metallica
• Real life, a term for the life in the real world
• Registered Locksmith, a trade qualification awarded to members of the Associated Locksmiths of America
• Reinforcement learning, a sub-area of machine learning
• Réseau Luxembourgeois des Amateurs d'Ondes Courtes, an amateur radio organization in Luxembourg
• Polo Ralph Lauren's NYSE ticker symbol
• Royal Phnom Penh Airways IATA code
• Reconstituted leaf, a type of tobacco processing used in some cigarettes
• Rugby league, a sport
• Residual Latex, excessive latex buildup.
• Roxbury Latin, a boys' preparatory school in Roxbury, MA