The Gawhar Shad Mausoleum, also known as the Tomb of Baysunghur, is an Islamic burial structure located in what is now Herat, Afghanistan.

Built in the 15th century, the structure served as a royal tomb for members of the Timurid dynasty and is part of the Musalla Complex.

The mausoleum was originally constructed to house the remains of Prince Baysunghur, a son of the Timurid ruler Shah Rukh by his chief wife Gawhar Shad.

More distantly related Timurids, Ahmad and Shah Rukh (sons of Abu Sa'id Mirza), were also buried in the mausoleum.

Intervention in the 1950s resulted in drastically changing the appearance of the building, with an entirely new eastern façade being built and the hexagonal Mihrab being demolished and replaced with a rectangular one.