Defunct Former Alf Ahlberg (21 October 1892 – 29 January 1979) was a Swedish academic, writer, humanist and philosopher.

He earned a Master of Business Administration in 1911 and his PhD in 1917 with the thesis, "Material problems of Platonism: Plato, Aristotle, Plotinus, Bruno: a historical-critical study.

In 1927, he became a teacher at the workers educational institute, Brunnsvik, and in 1932 he became the headmaster, which he remained until his retirement in 1959.

One of the most noted works, "The social and political myths" (1937), is about Nazi propaganda and mythology.

He also wrote several biographies on, for example, Augustine, John Malmberg, Nietzsche and Schopenhauer, and made translations of José Ortega y Gasset.