Mansour (Arabic: منصور, Manṣūr); also spelled Mounsor, Monsur (Bengali), Mansoor, Manser, Mansur, Mansyur (Indonesian) or Mensur (Turkish), is a male Arabic name that means "He who is victorious", from the Arabic root naṣr (نصر), meaning "victory."

The first known bearer of the name was Mansur ibn Sarjun, Byzantine governor of Damascus in the late 500s and early 600s, who surrendered the city to the Muslims in 635.

Other people called Mansur include, during the golden Age of Islam:

• Al-Mansur, second Abbasid caliph and the founder of Baghdad.
• Ismail al-Mansur, third ruler of the Fatimid dynasty ruled from 946 to 953.
• Mansur Al-Hallaj, Persian mystic, writer, and teacher of Sufism
• Almanzor, 10th-century ruler of al-Andalus
• Mansur ibn Ilyas, Timurid physician
• Mansur Khan (Moghul Khan), a khan of Moghulistan
• Mansur Shah of Malacca, a sultan of Malacca
• Mansur I of Samanid and Mansur II of Samanid, amirs of the Samanids
• Mansur ad-Din of Adal, 15th-century sultan of Adal.

• Al-Mansur Yahya (d. 976)
• Al-Mansur Abdallah (1166-1217)
• Al-Mansur al-Hasan (1199–1271)
• Al-Mansur an-Nasir (d. 1462)
• Al-Mansur Muhammad, Imam of Yemen (1441-1505)
• Al-Mansur al-Husayn (1669 - 1720)
• Al-Mansur Ali I (1738-1809)
• Al-Mansur Ahmad (d. 1853)
• Al-Mansur Ali II, Imam of Yemen (1812 - 1871)
• Al-Mansur al-Husayn III (d.1888)

Mansur or Mansour is used in Turkic languages, Iranian languages and Arabic, while the transliteration Mansoor is typically used by South Asians, and Mensur is used in the Bosnian language.

• Mansur Yavaş, Turkish politician and the mayor of Ankara
• Sheikh Mansur, Chechen leader against Catherine the Great's Russia
• Mansur Mozaffarov, Russian Tatar composer and pedagogue
• Mansur Abdulin, Soviet memoirist and soldier

• Mensur Akgün, Turkish scholar
• Mensur Bajramović, Bosnian basketball coach
• Mensur Suljović, professional darts player
• Mensur Kurtiši, Macedonian association football player

• Mansoor Abdullah, Singaporean convicted murderer
• Mansoor Ali Khan Pataudi, Indian cricketer
• Mansoor Al-Shehail, Saudi Arabian professional wrestler
• Mansoor Ahmed, Pakistani hockey player
• Mansoor Akhtar, Pakistani cricketer
• Mansoor Amjad, Pakistani cricketer
• Mansoor Delane, American football player
• Mansoor Hekmat, Iranian political theorist and activist
• Mansoor Ijaz, American commentator and businessman
• Mansoor Muhammed Ali Qattaa, Saudi Arabian held in detention in the United States' Guantanamo Bay detention camps
• Mansoor Khan, Pakistani film maker
• Mullah Bakht Mohammed, military commander for Afghanistan's Taliban known as Mansoor Dadullah
• Mansoor Muftah, Qatari football player
• Mansoor Ali Khan Pataudi, nawab of Bengal
• Mansoor Zaman, Pakistani professional squash player

• Mansour (singer), Iranian singer
• Mansour Abbas, Arab-Israeli politician
• Mansour F. Armaly, Palestinian-American physician and researcher
• Mansour al-Balawi, Saudi Arabian businessman
• Mansour Bahrami, Iranian tennis player
• Mansour el-Essawi (1937–2023), Egyptian politician
• Mansour Hassan (1937–2012), Egyptian politician
• Mansour Leghaei, Iranian Shia Imam and Founder of the Imam Husain Islamic Centre
• Mansour Matloubi, Iranian professional poker player
• Mansour Moalla (born 1930), Tunisian economist and politician
• Mansour bin Zayed Al Nahyan, member of the ruling family of Abu Dhabi in the United Arab Emirates
• Mansour Nariman, Iranian oud player and composer
• Mansour Osanlou, Iranian trade union activist
• Mansour Rahbani, Lebanese composer, musician, and producer
• Mansour Rouhani, Iranian politician
• Mansour bin Abdulaziz Al Saud, Saudi royal and politician
• Mansour bin Mutaib Al Saud, Saudi royal and politician
• Mansour bin Muqrin Al Saud (1974–2017), Saudi royal
• Mansour bin Nasser Al Saud (born 1959), Saudi royal
• Mansour bin Saud Al Saud, Saudi royal and businessman
• Mansour Seck, Senegalese singer and musician
• Mansour Al-Thagafi, Saudi Arabian footballer
• Mansour Zalzal, Abbasid musician and composer

• Almanzo Wilder, American farmer, whose first name is a form of al-Manṣūr.
• Mansurul Haq, Pakistani admiral and Chief of Naval Staff of the Pakistan Navy
• Mancur Olson, American economist and political scientist
• Mansyur S., Indonesian Dangdut singer

• Adly Mansour, Egyptian politician and acting President in 2014
• Adnan Mansour, Lebanese diplomat and politician
• Agnes Mary Mansour, American political figure and former nun
• Ahmed Subhy Mansour, Egyptian cleric, founder of the Quranist group
• Akhtar Mohammad Mansour (1968–2016), leader of the Taliban, in Afghanistan
• Amal Mansour (1950–2018), Palestinian-Jordanian author and translator
• Amir Mansour, American professional boxer
• Camille Mansour (born 1945), Palestinian academic
• Eli Mansour, American rabbi, author/writer
• Gueye Mansour, Senegalese footballer
• Hend Al-Mansour, Saudi Arabian-American artist
• Josh Mansour, Australian Rugby League player
• Joyce Mansour, British born Egyptian Surrealist poet who also wrote in French
• Mustafa Mansour, Egyptian footballer
• Ramadan Abdel Rehim Mansour, Egyptian street gang leader and serial killer
• Reda Mansour (born 1965), Israeli writer, historian and diplomat
• Richard Mansour, better known as Dick Dale, Lebanese-American guitarist
• Shadia Mansour, British born Palestinian singer
• Sliman Mansour, Palestinian painter
• Toufik Mansour, Israeli mathematician

• Belal Mansoor Ali, Bahraini runner from Kenya
• Ghulam Mansoor, Subedar major, Bhopal state
• M. A. Mansoor, Egyptian antiquarian
• Maghfoor Mansoor, Pakistani native who was a fugitive in the United States
• Misha Mansoor, American musician and founder of the Progressive Metal band Periphery
• Peter Mansoor, Palestinian American Army colonel, executive officer to Gen. Petraeus during Iraq War troop surge of 2007
• Shoaib Mansoor, Pakistani film producer, director, writer, lyricist, and composer

• Ali Mansur, prime minister of Iran
• Hassan-Ali Mansur, Iranian politician and prime minister
• João Mansur, Brazilian politician and governor of Lebanese descent
• Jossy Mansur, Aruban newspaper editor of Lebanese descent
• Mallikarjun Mansur, Indian classical singer
• Muhammad Mansur Ali, Bangladeshi politician and prime minister
• Sheikh Mukhtar Robow, leader and spokesman for Somalia's al-Shabaab known as Abu Mansur
• Ustad Mansur, Mughal painter from India

• Michael A. Monsoor, United States Navy SEAL and Medal of Honor recipient

• Al-Mansur (disambiguation)
• Manzur, a similar sounding yet unrelated name
• Mansura (disambiguation)
• Mansurnagar Union