Muhammad El Hadi Bey ( Larabci: محمد الهادي باي بن علي‎ ), wanda aka fi sani da Hédi Bey ( Le Bardo, 24 Yuni 1855 – Carthage, 11 May 1906) ɗan Ali III ibn al-Husayn ne kuma Husainid Bey na goma sha huɗu na Tunis, yayi mulki daga shekarar 1902 har zuwa mutuwarsa. An raɗa masa suna Bey al-Mahalla (Magajin Magaji) a ranar 3 ga Disamba 1898 kuma ya zama Bey na Tunis a ranar da magajinsa ya mutu, 11 Yuni 1902, a wani bikin da aka yi a ɗakin sarauta na fada a Tunis, a gaban mazaunin Faransa. Kafin garkuwar Faransawa ta Tunusiya Sultan na Ottoman ya baiwa Bey na Tunis da Magajinsa mukami na soja. Hédi Bey bai sami irin wannan girmamawa ba, amma an maishe shi Babban Darakta na Babban Jami'in Tsaro na Beylical lokacin da ya zama Magajin Gado, kuma ya zama Marshal a kan karɓar sa. Hoton Muhammad IV al-Hadi Bayan wata takaddama a cikin 1904 tare da Mazaunin Faransa Stephen Pichon kan sallamar Grand Vizier Mohammed Aziz Bouattour, ya yi fama da bugun jini wanda ya haifar da gurguntar ƙasansa.