Zaidi

Zaidi may refer to:


 * The Zaidiyyah sect of Islam or Al-Zaidi, its adherents
 * Zaidi Imamate or Yemeni Zaidi State, kingdom in Yemen (1597–1849)
 * Al-Zaidi, Arab descendants of Zayd ibn Ali
 * Zaidi Wasitis, people with the surname Zaidi, South Asian descendants of Zayd ibn Ali, from Wasit, Iraq, followers of Twelver or Athnā‘ashariyyah (Ja'fari jurisprudence)
 * Zaidi Al Wasti, another surname found among the same people
 * Yiddish informal title for grandfather