Breathing system

Breathing system may refer to:


 * Respiratory system, the biological system in the bodies of animals
 * Artificial respiration, several systems to breath artificially
 * Cardio-pulmonary resuscitation, a technique/system to maintain breathing when autonomic breathing fails
 * Ventilator
 * Breathing circuit, a medical device, to breathe and introduce anesthesia
 * Breathing apparatus, equipment systems used to breathe in hostile environments