The name Iddo originates from the Hebrew name עִדּוֹ (ʿIddo), which is possibly derived from עָדָה (ʿaḏa) meaning 'to pass by'. It is associated with several characters in the Old Testament, including a minor prophet during the reign of Solomon and the grandfather of the prophet Zechariah. The name carries connotations of transition and passage, reflecting its etymological roots.