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 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.
Edward Smith "Eki" Fatu (March 28, 1973 – December 4, 2009) was an American Samoan professional wrestler.
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.
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.