Jakob Ulvsson (1430s – spring 1521) was the archbishop of Uppsala and primate of the Roman Catholic Church of Sweden from 1469 to 1515.

He spent the years 1465–1470 in Rome and was meanwhile appointed Canon of Uppsala in 1465 and Archdeacon of Växjö in 1468.

In the conflicts between the Danish king Christian I of Denmark and the Swedish regent Sten Sture, Jakob took a mediating position, trying as far as possible to avoid open warfare, especially in Uppland.

After Sten Sture's victory in the Battle at Brunkeberg in 1471, the situation stabilized and he participated in the work of the privy council.

He is usually regarded is the main initiator of the university in Uppsala, which was founded after having received papal approval in the form of a bull of Pope Sixtus IV dated 27 February 1477.