The Grand Trunk (GT) Road was constructed by:

The Grand Trunk (GT) Road is one of Asia's oldest and longest major roads, with a history spanning centuries and various rulers who contributed to its development.

• The road was significantly rebuilt, extended, and improved by the Afghan ruler Sher Shah Suri during his reign in the 16th century. He is widely credited for transforming it into a vital artery for trade and communication, adding sarais (rest houses), wells, and trees along its path.
• Jahangir and Aurangzeb were later Mughal emperors who maintained and perhaps made minor additions to the road, but they were not its primary constructors.
• While Mughal engineers would have worked on parts of the road during the Mughal era, Sher Shah Suri, who predates the peak Mughal period, is specifically recognized for its major reconstruction and systematization.