The extraordinarily rich blood supply of the tongue makes it possible to use a variety of pedicled tongue flaps: 1. Defects of the dorsum of the tongue can be covered either with island flaps from the margin or with flaps crossing the midline. 2. Medial defects can be covered by flaps taken from both sides or from the centre of the dorsum. 3. Defects of the tip of the tongue or the front of the floor of the mouth can be filled by island flaps taken from one or both sides of the tongue. Large defects can be crossed by a triangular island flap pulled through a tunnel. 4. For defects in the lateral floor of the mouth an oval shaped flap from the middle of the tongue is pulled through a tunnel into the defect.