Zanjani is a surname. Notable people with the surname include:
Abbas-Ali Amid Zanjani (1937–2001), Iranian politician Asadollah Bayat-Zanjani (born 1941), Iranian theologian Babak Zanjani (born 1974), Iranian business magnate Abdulkarim Zanjani (1887–1968), Muslim scholar Esmail Zanjani, American researcher Mirza Abutaleb Zanjani (1843–1911), Iranian jurist Mohammad Ezodin Hosseini Zanjani (1921–2013), Iranian Twelver Shi'a Marja' Seyyed Mohammad Hosseini Zanjani (born 1947), Iranian Twelver Shi'a Marja' Mousa Shubairi Zanjani (1928–2026), Iranian Twelver Shi'a Marja' Nina Zanjani (born 1981), Swedish actress Reza Zanjani (1902–1984), Iranian cleric