Jabez Olssen (born August 5, 1975) is a New Zealand editor who worked as an assistant and additional editor for the first two of the Lord of the Rings film trilogy, and the editor for The Hobbit trilogy. He had also worked with Peter Jackson as an additional editor for King Kong and The Adventures of Tintin.

He had also made a cameo in the first two The Hobbit films as a Dwarf of the Lonely Mountain running from the dragon Smaug, and a "Fish Monger" talking to Bard the Bowman.