Fakir Aziz ud-Din (Punjabi: فقیر عزیزالدین (Shahmukhi); ਫ਼ਕੀਰ ਅਜ਼ੀਜ਼ ਉੱਦੀਨ (Gurmukhi); 1780–1845) was a physician, linguist, diplomat, and foreign minister at the court of Maharaja Ranjit Singh.

The Maharaja was impressed by his medical skill and proficiency in languages – Arabic, Persian and English – and granted him a jagir and a position at court.

In December 1839 he represented Maharaja Kharak Singh on a mission to the British Governor-General, Lord Auckland.

He remained scrupulously aloof from the factional intrigues which had overtaken the Empire after Ranjit Singh's death.

[2] Saddened at the turn events had taken and by the death of two of his sons, Aziz ud-Din died in Lahore on 3 December 1845, aged 65.