UA, U-A, Ua, uA, or ua may refer to:
The UAAP Season 80 volleyball tournaments will commence on September 09, 2017 with the junior tournaments.
The UAAP Season 78 high school volleyball tournament will start on August 22, 2015. The tournament venue will be at the Adamson University Gym in San Marcelino St., Ermita, Manila.
The seniors' division of the UAAP Season 74 volleyball tournaments opened November 26, 2011. Tournaments are hosted by Ateneo de Manila University.
The UAE Pro-League, commonly known as the Arabian Gulf League for sponsorship reasons, is the top professional football league in the United Arab Emirates (UAE).
Unmanned aerial vehicles (UAVs) or drones have frequently been involved in military operations. Non-military UAVs have often been reported as causing hazards to aircraft, or to people or property on the ground.