Viktor Frankl, Austrian neurologist and psychiatrist (d. 1997)
Viktor Emil Frankl (26 March 1905 – 2 September 1997)

was an Austrian neurologist, psychiatrist, philosopher, author, and Holocaust survivor.He was the founder of logotherapy, a school of psychotherapy that describes a search for a life's meaning as the central human motivational force. Logotherapy is part of existential and humanistic psychology theories.Logotherapy was recognized as the third school of Viennese Psychotherapy; the first school was created by Sigmund Freud, and the second by Alfred Adler.

Frankl published 39 books. The autobiographical Man's Search for Meaning, a best-selling book, is based on his experiences in various Nazi concentration camps.