Nasiruddin () was originally an honorific title and is a masculine given name and surname of Arabic origin. There are many variant spellings in English due to transliteration including Nasir al-Din, and Nasruddin. Notable people with the title or name include:
People with the given name Nasiruddin Nasiruddin Mahmud (eldest son of Iltutmish) (died 1229), ruler of Bengal Nasiruddin Mahmud Shah, Sultan of Delhi (1246–1266), Muslim Turkic ruler Nasiruddin Bughra Khan, governor and then Sultan of Bengal (1281–1291) Nasiruddin Chiragh Dehlavi (1274–1356), mystic-poet and Sufi saint Nasiruddin Mahmud Shah of Bengal (died 1459), sultan of Bengal Nasiruddin Nasrat Shah (died 1532), sultan of Bengal Nasiruddin Khan (c. 1948 – 2018), an Indian politician from West Bengal Nasiruddin Ahmed Pintu (1967–2015), Bangladeshi politician Nasiruddin Yousuff (fl. from 1973), Bangladeshi stage and film director Nasiruddin Faruque (born 1983), Bangladeshi cricketer Nasiruddin Chowdhury (born 1985), Bangladeshi footballer Nasiruddin Nasir (born 1992), Malaysian actor
People with the middle name or father's name Ismail Nasiruddin of Terengganu (1907–1979), Yang di-Pertuan Agong of Malaysia Muhammad Nasiruddin al-Albani (1914–1999), Syrian-Albanian Islamic scholar
People with the surname Nasiruddin Advocate Nasiruddin (1892–1949), lawyer and political and social leader from Bhopal, India Mir Mohammad Nasiruddin (fl. from 1990s), Bangladeshi politician Mohammad Nasiruddin (1888–1994), Bangladeshi journalist Shaikh Nasiruddin (1916–1991), an Indian cricketer Syed Nasiruddin, a Sufi saint and military leader associated with the spread of Islam in Bengal in the 14th century
See also ad-Din, Arabic name suffix Nimatnama-i-Nasiruddin-Shahi, 16th-century medieval Indian cookbook, written in Persian language Nasir al-Din (disambiguation)