Muhiddin is a masculine given name and surname of Arabic origin. In Turkish, the name is spelled as Muhittin. It is a variant of Muḥyī'd-Dīn. Notable people with the name include:
Given name Muhi al-Din Muhammad Aurangzeb (1618–1707), Emperor of the Sultanate of India and the Mughal Empire Muhi Al-Din Lari (died 1526), Indian or Persian miniaturist and writer Muhyeddin Seghatoleslam (born 1960), Persian architect and urban designer Muhyi al-Din Faris (1936–2008), Sudanese poet Muhyi ad-Din Muzaffar Jang Hidayat (died 1751), ruler of Hyderabad Muhyi al-Dīn al-Maghribī (1220–1283), Spanish-born Arab astronomer Muhidin (born 1958), Indonesian politician Muhidin Čoralić (born 1968), Bosnian footballer Muhidin Mohamad Said (born 1950), Indonesian businessman and politician Muhidin Teskeredžić (born 1958), Bosnian footballer Muhidin Zukić (born 1971), Bosnian footballer Muhieddine Itani (1929–2015), Lebanese footballer Muhieddine Jaroudi, Lebanese footballer Muhittin Akyüz (1870–1940), Turkish general, diplomat. Muhittin Baştürk (born 1991), German footballer Muhittin Böcek (born 1962), Turkish politician Muhittin Kurtiş (1876–1951), Turkish general. Muhittin Sarıçiçek (born 2000), Turkish wrestler Muhittin Sebati (1901–1931), Turkish painter Muhittin Serin (born 1945), calligrapher Muhittin Taylan (1910–1983), Turkish judge Muhiuddin Khan (1935–2016), Bangladeshi author Muhiuddin Khan Alamgir (born 1942), Bangladeshi economist and politician Muhyiddin of Brunei (1643–1690), Sultan of Brunei Muhyiddin Mansur Shah (died 1662), Sultan of Kedah Muhyiddin Yassin (born 1947), Malaysian former Prime Minister, politician Al-Sayyid Muhiyudin Abu Muhammad Abdul-Qadir Gilani Al-Hasani Wal-Hussaini (1077–1166), Sufi religious figure Şerif Muhiddin Targan (1892–1967), Turkish musician Taha Muhie-eldin Marouf (1929–2009), Iraqi-Kurdish politician
Surname Bawa Muhaiyaddeen (died 1986), Sri Lankan Tamil Sufi mystic Nezihe Muhiddin (1889–1958), Ottoman and Turkish women's rights campaigner Twahir Muhiddin, Kenyan football coach