Stanford athletic director Bernard Muir will step down from his position at the conclusion of this academic year, the university announced Tuesday.
An acting athletic director will be named in the near future.
Muir is closing out his 13th year at the school, which during his tenure has won more than 30 NCAA championships and eight Directors' Cups for overall athletic department excellence.
The move comes amid a transitional period for the athletic department. The school is completing its first season in the ACC, a move made amid the fracturing of the traditional Pac-12.
Stanford's marquee sports have struggled in recent seasons.