Individual traumatic cranial nerve injuries are discussed in this chapter. Cranial nerves may be injured before, during or after their passage through the skull. In addition, complications such as the tissue reaction at a fracture site, increased intracranial pressure or meningitis may add to injury. Early recognition and treatment may provide beneficial effects. Surgical repair is often more difficult with cranial nerves due to difficult accessibility; it is more often done for facial nerve injury. Trochlear and abducens nerves are each responsible for the innervation of only one muscle and therefore the recovery is better unlike trigeminal with its complexity. Delayed recovery (up to 1 year) can occur with olfactory, trochlear and vestibulocochlear nerve injury.