UA, U-A, Ua, uA, or ua may refer to:
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 UAAP Season 79 volleyball tournaments started on February 4, 2017 at the Smart Araneta Coliseum in Quezon City, with the opening games of the men and women's senior volleyball tourneys, participated by 8 regular UAAP members.
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.
The seniors' division of the UAAP Season 74 volleyball tournaments opened November 26, 2011. Tournaments are hosted by Ateneo de Manila University.
The UAAP Season 79 basketball tournaments are held in school year 2016-17. University of Santo Tomas is the season host while Far Eastern University are the defending champions.