Jørgen Jensen Sadolin (c. 1490 – 29 December 1559 in Odense) was a Danish reformer, the son of Jens Christensen, a curate and subsequently a canon of Viborg Cathedral, and consequently, in all probability, born c. 1499 out of wedlock, as his Catholic opponents frequently took care to remind him. He himself never used the name Sadolin, which seems to have been invented subsequently by his son Hans, and points to the fact that the family were originally saddle-makers.