Adam Joachim Vetulani (20 March 1901 – 25 September 1976) was a Polish historian of medieval and canon law, professor of the Jagiellonian University and a General Secretary of the Polish Academy of Learning (1957–58).

He attended high schools in Sanok and Cieszyn, in 1917 he passed examination of maturity in Vienna.

After taking part in Polish–Soviet War in 1920 (for which he was decorated with Cross of Valor) Vetulani returned to the university and received master's degree in 1923.

One of his professors, Stanisław Kutrzeba, had a strong influence on Vetulani's work.

He was a teacher and mentor of Karol Wojtyła, who later became pope John Paul II.