Long-lasting tracheal tubing in newborns and infants, associated with repeated tracheobronchial aspiration, is sometimes complicated by tracheal and/or bronchial stenoses. Many therapeutic methods have been described to treat this condition: use of dilatators, laser, surgery, insertion of prosthetic material. Dilatation with an angioplasty balloon has been recently described for the treatment of various stenoses. The authors report about 3 cases of acquired tracheobronchial stenosis which were successfully treated with this method, and 1 case of complex tracheal stenosis (with a double inflammatory and congenital nature) which required both dilatation and surgery. The technique is described. There is no morbidity and no mortality in this non-randomized series. Balloon dilatation is a simple and effective method, which may be proposed as a first-intention treatment for acquired tracheobronchial stenosis in newborns and infants.