Mamdouh (also spelled Mamduh or Memduh, Arabic: ممدوح) is a masculine given name and also, a surname. People with the name include:

Given name

• Mamdouh Abbas, Egyptian businessman, twice Zamalek chairman
• Mamdouh Al Aker (born 1943), Palestinian physician and politician
• Mamdouh Bahri (born 1957), jazz guitarist who has combined Afro-Mediterranean music with a jazz tradition
• Mamdouh Habib, Egyptian born Australian Muslim detained in the Guantanamo Bay detainment camps
• Mamdouh Ismail, Egyptian defence attorney and a former member of "the Jihad group"
• Mamdouh Hosny Khalil (born 1964), Egyptian politician
• Mamdouh Kashlan (born 1929), Syrian painter
• Mamdouh Mahmud Salim (born 1958), alleged co-founder of the Islamist terrorist network al-Qaeda
• Mamdouh Marei (1938–2018), Egyptian jurist and politician
• Mamdouh Saidam (1940–1971), Palestinian Fatah member
• Mamdouh Salem (1918–1988), Prime Minister of Egypt from 1975 to 1978
• Mamdouh bin Abdulaziz Al Saud (1940-2023), Saudi royal
• Memduh Ün (1920–2015), Turkish film producer and director

Surname

• Alia Mamdouh (born 1944), Iraqi novelist, author and journalist living in exile in Paris, France