Muir is currently the head of golf at Glenalmond College, having previously held the same post at Loretto School.
Saints Golf, the University of St Andrews’ student golf programme, hosts over 350 members.
“I’m delighted to be joining such a prestigious institution as their first permanent director of golf,” said Muir of his new role.
“Saints Golf is already in a great place and I look forward to helping the students to achieve their goals, whether that be as elite amateurs or at a more recreational level.
“The University and Saints Sport are extremely ambitious, with an exciting future. I can’t wait to get started.”
Saints Golf delivers lessons to hundreds of beginners each year through the student golf club and partners the St Andrews Links Trust.
Five teams will compete in British Universities and Colleges Sport (BUCS) next year after recently being crowned British Student Match-Play champions.
Ian Gaunt, Deputy Director of Sport, said: “Ian’s experience at all levels of golf, but especially the very top of amateur golf, will ensure our golf scholars, along with the wider golf club receive the expertise, individual support and guidance they need and deserve.
“We have one of the biggest student golf clubs in the world, and we look forward to Ian making a difference at all levels.”
Muir previously worked for Scottish Golf as a Regional Performance Coach, during which time he first linked up with Darling.