Aatto Albanus Sonninen (December 24, 1922 – Mars 31, 2009) was a phoniatrician and was an influential person in Phoniatrics and Logopedics for half a century. Sonninen graduated from Kuopio Lyceum in 1942 and graduated as a Licentiate in Medicine in 1950. In Medicine and Surgery he received his doctorate in 1956, where he was also a specialist in speech and sound disorders and ear, nose and throat qualifications. In the early years of his career, Sonninen worked for several hospitals and made field trips to the United States and to numerous countries in Europe. Professor's Honorary Title Sonninen was awarded in 1981. He retired in 1986.