RTU
Rtu or RTU may refer to:
In education:
- Rajasthan Technical University, in Rajasthan, India
 - Riga Technical University, in Riga, Latvia
 - Rizal Technological University, in the Philippines
 - RTU MIREA, Russian Technological University, Moscow
 
In other uses:
- Ṛtú, a Sanskrit word referring to a fixed or appointed time
 - Ready to use (Ready-To-Use), used in Medicine, e.g. RTU Suspension for Injection
 - Real Tamale United, a football club based in Tamale, Ghana
 - Recognizable taxonomic unit, used in Parataxonomy
 - Remote terminal unit, a microprocessor controlled electronic device
 - Returned to unit, a British and Canadian military term
 - Road to Ultra, music festival
 - Roof top unit, a commercial air handler that heats and cools air
 - Chilevisión, formerly known as Red de Televisión de la Universidad de Chile