Sadr (Persian: صدر) is a Persian surname. Notable people with the surname include:
Ali Sadr Hasheminejad, known as Ali Sadr (born 1980), American businessman Behjat Sadr (1924–2009), Iranian painter Fazlollah Sadr, Iranian politician Hamid Reza Sadr (1956–2021), Iranian journalist Hussein Mohammed Hadi Al-Sadr (1945–2026), Iraqi Shia cleric, scholar, and writer Ibrahim Sadr, Afghan politician Javad Sadr (1912–1990), Iranian diplomat and politician Muhammad-Sadiq al-Sadr (1943 – 1999) Iraqi Shia cleric and jurist Mohsen Sadr (1871–1962), Iranian politician Movayyed Hoseini Sadr (born 1970), Iranian politician Muqtada al-Sadr (born 1974), Iraqi radical Shiite cleric Reza Sadr (born 1932), Iranian politician Shadi Sadr (born 1974), Iranian lawyer and journalist Shahabedin Sadr (born 1962), Iranian physician and politician Wafaa El-Sadr (born 1950), Egyptian American physician