Dahdah is an Arabic family name. Notable people with the surname include:
Abu Dahdah, Syrian-born Spaniard member of Al Qaeda Edward al-Dahdah (1898–1945), Lebanese journalist Lucien Dahdah (1929–2003), Lebanese academic and businessman Paul Dahdah (born 1941), bishop of the Apostolic Vicariate of Beirut
See also Abu Dahdah, alias of Imad Eddin Barakat Yarkas, Syrian-born Spaniard Al Qaeda member House of al-Dahdah, Lebanese Maronite Christian family