In the Book of Esther, Memukan—also transliterated Memucan—is the adviser who suggests exiling Queen Vashti. He is one of the seven Persian princes who advise King Ahasuerus, commonly identified with Xerxes I.
Vashti refuses the king’s command to appear before his banquet guests and display her beauty. Ahasuerus consults his advisers about the incident, and Memukan argues that her refusal threatens not only the king’s authority but also the obedience of wives throughout the empire.
Memukan recommends removing Vashti from the queenship and replacing her with another woman. The king accepts the advice and issues a decree stating that husbands should exercise authority in their households.
The decision sets the story’s central succession in motion. Once Vashti is removed, a search for a new queen eventually brings Esther into the Persian court. Readers sometimes encounter the name as Memucan, Memukan, or Memuchan; these are transliteration variants of the same biblical adviser.