QRL

QRL is a three letter acronym that can stand for several things:
 * Qingdao Red Lions F.C., a Chinese association football club
 * Quantum Resistant Ledger, a blockchain solution utilizing Post-Quantum Cryptography (PQC)
 * The Queen's Royal Lancers, an armoured regiment of the British Army
 * Queensland Rugby League, the governing body of rugby league football in the Australian state of Queensland
 * QRL, one of the Q codes used in radiocommunication, meaning "I am busy"
 * A QR Code with a URL (web site address) encoded within it