Eustachian tube dysfunction is a frequent pathology of middle-ear ventilation, leading to many more or less disabling otologic symptoms. Severity varies from simple otitis media with effusion to aggressive chronic otitis or cholesteatoma. First-line treatment is medical, but surgery can also be proposed. It consists in balloon dilation of the Eustachian tube, in order to increase ventilation and improve symptoms. It is performed in second-line in patients with Eustachian tube dysfunction confirmed by tubomanometry, after failure of local drug treatment. It can be performed under general or local anesthesia but it is mandatory to use a medical device with market authorization for this indication. The main aim of this surgical note is to describe the technique of balloon dilation in the treatment of Eustachian tube dysfunction and the three balloon models with CE label and market authorization currently available in France and in Europe. Balloon dilation of the Eustachian tube appears to be a promising option to restore natural middle-ear ventilation in patients with chronic obstructive Eustachian tube dysfunction.