Reyaz Uddin Ahmad (, ) is a Bengali masculine given name of Arabic origin. It may refer to:
Reazuddin Ahmad Mashadi (1859–1918), writer and philosopher Muhammad Reazuddin Ahmad (1861–1933), writer and journalist Sheikh Reyazuddin Ahmed (1882–1972), author Md. Reazuddin Ahmed (1929–1997), former deputy speaker of parliament Riaz Uddin Ahmed (1945–2021), journalist and former president of Jatiya Press Club Riaz Uddin Ahamed Siddique (born 1972), film actor, producer, and television presenter
See also Rezauddin Stalin Reyaz Uddin Ahmad