The 64-year-old Scotsman, who is leaving to "pursue other design projects", will be replaced by current creative design director Julian Thomson. He will continue to work with Jaguar as a design consultant, however.
“I have had an incredible career at Jaguar," Callum said. "One of my biggest highlights was creating the XF, because it represented the beginning of a new era, moving Jaguar from tradition to contemporary design. It was a significant turning point in our story.
"I came into this role with a mission to take Jaguar design back to where it deserved to be. It has taken 20 years, but I believe I have achieved what I set out to do. Given the strength of both our products and the design team, I feel that now is the right time to move on, both personally and professionally, and explore other design projects.