UM or um may refer to:
The Umayyad Caliphate (Arabic: الخلافة الأموية, trans. Al-Khilāfah al-ʾumawiyya), also spelled Omayyad, was the second of the four major Arab caliphates established after the death of Muhammad.
Umar, also spelled Omar (Arabic: عمر بن الخطاب , translit. ʿUmar ibn Al-Khattāb, lit. 'Umar, Son of Al-Khattab', born c.583 CE – died 3 November 644 CE), was one of the most powerful and influential Muslim caliphs in history.
The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard.
Uma Karuna Thurman (born April 29, 1970) is an American actress and model. She has performed in a variety of films, ranging from romantic comedies and dramas to science fiction and action movies.
An umbrella or parasol is a folding canopy supported by wooden or metal ribs, which is usually mounted on a wooden, metal, or plastic pole.
"Umbrella" is a song by Barbadian singer Rihanna from her third studio album Good Girl Gone Bad (2007).
Edward Smith "Eddie/Eki" Fatu (March 28, 1973 – December 4, 2009) was an American Samoan professional wrestler.
Umineko When They Cry (うみねこのなく頃に, Umineko no Naku Koro ni, lit. When the Seagulls Cry) is a Japanese murder mystery dōjin soft visual novel series produced by 07th Expansion.
Umar Farouk Abdulmutallab (Arabic: عمر فاروق عبد المطلب ; also known as Umar Abdul Mutallab and Omar Farooq al-Nigeri; born December 22, 1986) popularly referred to as the "Underwear Bomber", is a Nigerian man who, at the age of 23, confessed to and was convicted of attempting to detonate plastic explosives hidden in his underwear while on board Northwest Airlines Flight 253, en route from Amsterdam to Detroit, Michigan, on Christmas Day, 2009.