Tafazzul Husain Khan Kashmiri (1727–1801) (Urdu: علامہ تفضل حسین کشمیری), also known as Khan-e-Allama, was a Twelver Shia scholar, physicist, and philosopher.

Soon he developed doubts about the teachings of Sunni Islam and philosophy and moved out of the seminary, and started to research on his own.

There the then young Dildar Ali Naseerabadi, who later came to be known as Ghufran Maab, became his student.After the death of Nawab Shuja-ud-Daula his elder son Asaf-ud-Daula appointed Allama Tafazzul Hussain Khan Kashmiri as the Prime Minister of Awadh.

In the time of Nawab Asaf-ud-Daula, Kashmiri was also appointed as an ambassador to the court of governor general of East India Company at Calcutta.

Mirza Abu Talib Khan wrote the following eulogy upon receiving the news of his death while in London: "Alas!

The zest of Learning's cup is gone; Whose taste ne’er cloy’d, tho’ deep the draughts; Whose flavor yet upon the palate hangs Nectareous, nor Reason's thirst assuag’d But yes; – rent is the garment of the morn; And all dishevell’d floats the hair of night; All bath’d in tears of dew the stars look down With mournful eyes, in lamentation deep; For he, their sage belov’d, is dead; who first To Islam's followers explain’d their laws, Their distances, their orbits, and their times, As great Copernicus once half divin’d, And greater Newton proved; but, useless now, Their work we turn with idle hand, and scan With vacant eye, our own first master gone.