MUO stands for the Miss Universe Organization.
MUO or Muo may also refer to the following
Mountain Home Air Force Base in Idaho (IATA code) Mathiang Muo (born 1987), Australian-Sudanese basketball player MakeUseOf, a technology website owned by Valnet Muzej za umjetnost i obrt, the Croatian name of Museum of Arts and Crafts, Zagreb
Former institutions Medical University of Ohio, which merged with University of Toledo in 2006 to become University of Toledo College of Medicine and Life Sciences