Andreas Rett (January 2, 1924 – April 25, 1997) was an Austrian neurologist and author. He is famous for his research on neurodevelopmental disorders, particularly for his description of Rett syndrome, which was named after him, and for pioneering treatment based on the belief that disabled children also have a right to fulfillment of their physical, emotional, and psychological needs. He received many awards, including the Grand Decoration of Honour for Services to the Republic of Austria.