Orthognathic surgery is a surgery to correct conditions of the jaw and face or to correct orthodontic problems that cannot be easily treated with braces. It is also used in treatment of congenital conditions like cleft palate. Bones can be cut and re-aligned, held in place with either screws or plates and screws.

Orthognathic surgery is performed by an oral and maxillofacial surgeon almost always in collaboration with orthodontic treatment, often including braces before and after surgery, and retainers after the final removal of braces. Orthognathic surgery is often needed after reconstruction of cleft palate or other major craniofacial anomalies.