This proper masculine name belongs to one of the men sent from Bethel to Jerusalem to inquire whether fasting should continue now that the temple is being rebuilt. Zechariah 7:2 mentions 'Sharezer and Regem-Melech and their men' coming with this question. The compound name means something like 'friend of the king' or 'royal friend,' possibly indicating a court position or honorific. The delegation's question triggers an extended prophetic response about the nature of true fasting and obedience. Regem-Melech himself is otherwise unknown, mentioned only in this diplomatic/religious inquiry context.