Ambu A/S is a Danish company that develops, produces, and markets single-use endoscopy solutions, diagnostic and life-supporting equipment to hospitals, private practices, and rescue services.

Founded in Denmark in 1937 as Testa Laboratorium by German engineer Holger Hesse.

The largest business areas are Anesthesia, Cardiology, Neurology, Pulmonology, Urology, and Gastroenterology. The company’s most important products are ventilation products for artificial respiration, single-use endoscopes, and single-use electrodes for ECG tests and neurophysiological mappings.