Qutb al-Din Muhammad (died 1346) was the Mihrabanid malik of Sistan from 1330 until his death.
During Qutb al-Din's reign the central Ilkhanid government in Soltaniyeh collapsed; Sistan's distance from the Ilkhanid center allowed it to mostly avoid the wars that plagued Persia during this time.
Under Qutb al-Din Sistan did face one foreign invasion, by the Kartid malik Mu'izz al-Din Husayn, in 1333 or 1334 after he was invited by the Mihrabanid's opponents.
Mu'izz al-Din decided to end the campaign after heeding the counsel of a Sufi adherent.
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