Thahir is a given name and a surname. Notable people with the name include:

Given name M. M. Thahir (born 1974), Sri Lankan politician Marrikkar Mohamed Thahir, Sri Lankan politician Sameer Thahir (born 1976), Indian cinematographer, screenwriter, producer and film director

Surname Alwi bin Thahir al-Haddad (1884–1962), Yemeni scholar and Islamic jurist Thahir Zaman (born 1995), Indian footballer

See also