Wilhelm Baum (born 1948 in Düsseldorf, Germany) is an Austrian historian, theologian, philosopher and publisher.
He studied history, German language, and theology in Innsbruck, Rome, Mainz and Tübingen (two of his professors were Ernst Bloch and Hans Küng).
Now he lives in Klagenfurt, Austria, and works as a chief of a publishing house Kitab-Verlag, which he founded in 1999.
He wrote books about Ludwig Wittgenstein and Karl Popper (translated into Spanish and Slovene) and studied the history of Christianity in the Near East and in India (Assyrian Church of the East and the Syriac Orthodox church).
He wrote books and articles about history of Slovenes living in Carinthia.