MUMUS, the Monash University Medical Undergraduatesâ Society, is a student-run organisation that represents and supports Monash Universityâs diverse range of medical students. All Monash medical students - whether they are based in Clayton, Gippsland, or elsewhere in Victoria - become members of MUMUS on enrolment at Monash University and continue their membership until graduation, making MUMUS the largest MedSoc in Australia.