Audax UK or AUK is a British cycling club that oversees randonneuring (long-distance cycling) in the United Kingdom. It was formed in 1976 to help British riders complete the qualifying rides for entry to the Paris-Brest-Paris randonee. Audax UK is recognised by Audax Club Parisien as the official brevet-coordinating organization for the United Kingdom. Audax UK members sometimes informally describe themselves as AUKs.