Mamnoon or Mamnun is a masculine given name of Arabic origin. Notable people with the name include:
Given name Mamnoon Hussain (1940–2021), Pakistani businessman and politician Mamnoon Maqsoodi (born 1966), Afghan actor Mamnoon Rahman (born 1965), Bangladeshi judge Mamnun Hasan Emon (born 1983), Bangladeshi actor and model