Shamsuddin Firuz Shah (Persian: شمس الدين فيروز شاه, Bengali: শামসুদ্দীন ফিরুজ শাহ, Shams Ad-Dīn Firūz Shāh; reigned: 1301–1322) was the independent ruler of the Lakhnauti Kingdom.
Historian Abdul Karim, writing in 1958, endorsed that view and concluded based on original and contemporary authorities that Firuz came from Delhi and was appointed secretary to Bughra Khan.
On his accession to the throne, Sultan Shamsuddin Firuz Shah entrusted the governorship of Bihar to Tajuddin Hatim Khan, one of his sons.
Rukunuddin Kaikaus had already started the conquest of the eastern part of Bengal, and the task was completed during the time of Firuz Shah.
During the reign of Firuz Shah, his nephew Sikandar Khan Ghazi led a fruitful expedition against Matuk, a Hindu Raja of the Sundarban area.
Thus during his time, Lakhnauti extended from at least the rivers Son and Ghogra in the west to Sylhet in the east and from Dinajpur-Rangpur in the north to Hughli and the Sundarbans in the south.
A group of scholars, on the basis of these coins, have argued that the sons of Firuz Shah rose in rebellion against their father and alternately ruled Lakhnauti.
In fact, Firuz Shah ascended the throne of Lakhnauti at quite an advanced age when he was the father of six grown-up sons who helped him in the affairs of the kingdom.