Nusrat al-Din Muhammad (died 1330/1331) was the Mihrabanid malik of Sistan from 1318 until his death.
Nusrat al-Din decided to take advantage of the situation and took control of the capital himself.
Rukn al-Din, however, had a large degree of support throughout Sistan outside of the capital, and fighting broke out between the brothers.
Eventually the religious leaders and nobles of Sistan stepped in and brokered a peace agreement.
In 1330 or 1331 he died, whereupon the eminent men of Sistan selected the malik's nephew Qutb al-Din Muhammad as his successor.