UA, U-A, Ua, uA, or ua may refer to:
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 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 seniors division football tournament started on February 4, 2017, following the shift in the start of the league at the Rizal Memorial Stadium in Manila.
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.
The UAB Blazers are the varsity intercollegiate athletic programs of the University of Alabama at Birmingham.
The seniors' division of the UAAP Season 74 volleyball tournaments opened November 26, 2011. Tournaments are hosted by Ateneo de Manila University.