Um

Um or UM may refer to:

Businesses and organisations

• Air Zimbabwe (IATA:<code>UM</code>)
• Union for the Mediterranean, an intergovernmental body
• United Methodist Church
• United Motors Company, an American automotive parts supplier
• Universal McCann, a global advertising and media agency
• Universal Medicine, an Australian cult

Language

• "Um", a filler in spoken English and some other languages
• Um (cuneiform), a prehistoric alphabetic sign

Science and technology

• Micrometre (μm), sometimes written as "um" in limited character sets
• Ultrarapid metabolizer, a term used in pharmacogenomics to refer to individuals with substantially increased metabolic activity
• .um, the Internet domain for the US Minor Outlying Islands
• Um interface, the air interface for the GSM mobile telephone standard
• Unified Model, a global numerical weather prediction model
• User manual, a document or manual intended to give assistance to people using a particular system
• Utilization management, the evaluation of the appropriateness, medical need and efficiency of health care

Other uses

• Um (Korean surname)
• Umphrey's McGee, a jam band, stylized as UM
• Unified Messaging, in marketing
• United States Minor Outlying Islands (ISO 3166:<code>UM</code>)
• Unofficial magistrate, as a postnominal
• Uttaradi Math, a Hindu matha (monastery)