RLU
# RLU

RLU may refer to:

* Rectified linear unit, a neuron activation function used in neural networks, usually referred to as an ReLU
* Relative light unit, a unit for measuring cleanliness by measuring the levels of Adenosine Triphosphate
* Remote line unit, a type of switch in the GTD-5 EAX switching system
* RLU-1 Breezy, an American homebuilt aircraft design
* Rusline, a Russian airline whose ICAO airline code is RLU
