Bruno Baron von Freytag-Löringhoff (11 June 1912–28 February 1996) was a German philosopher, mathematician and epistemologist.

His most important contributions to the history of logic and mathematics was his studies and descriptions from 1957, of the calculating machine, built by Wilhelm Schickard.

After attending lectures in mathematics, physics, musicology and philosophy at the Universities of Greifswald and Munich, Freytag earned his doctorate in Philosophy in Greifswald in 1936 and habilitated in 1944 in Freiburg im Breisgau and 1947 in Tübingen after taking part in the war.

In 1957 he reconstructed the first calculating machine of 1623, which was handed down only in scanty sketches from the Tübingen astronomy professor Wilhelm Schickard.

[2] His views were challenged by Józef Maria Bocheński, Paul Bernays and Béla Juhos, who were also at the Symposium.