UMM may refer to:

• UN/CEFACT's Modeling Methodology (UMM), a business process modeling methodology of the United Nations
• UMM (União Metalo-Mecânica), a metal works factory and former Portuguese automobile manufacturer
• University of Minnesota Morris
• Underground Music Movement an Italian disco label, later turned clothing line
• Urban Male Magazine, a Canadian men's magazine
• Umm Kulthum, Egyptian singer
• "Um" or "umm", an instance of speech disfluency
• UMM blocks, Urea-molasses multinutrient blocks
• Arabic word for mother
• University of Maine at Machias, a college in Machias, Maine
• University of Muhammadiyah Malang, a college in Malang, Indonesia
• University of Medicine, Mandalay, a medical institute in Mandalay.
• Unified Markov model