Foreign Accent Syndrome (FAS) is rare speech disorder that affects about 80 persons in all the world, it´s a rare speech disorder characterized by segmental (abnormality in time of pronunciation of vocal and consonant) and prosodical deficits (abnormality in rhythm and intonation of words and phrases) without abnormal grammatical abnormalities, the patient´s speech resembles a nonnative accent. The most of cases present like an acquired abnormality of the speech due to a damage of the central nervous system. It could be secondary to neurologic or psychogenic disturbances. We present a case of FAS. It was a 65 years old woman with diagnosis of Multiple Sclerosis.