Bismillah Khan (Urdu: استاد بسم اللہ خان صاحب‎; 21 March 1913 – 21 August 2006), often referred to by the honorific title Ustad, was an Indian musician credited with popularising the shehnai, a subcontinental wind instrument of the oboe class. While the shehnai had long held importance as a folk instrument played primarily during traditional ceremonies, Khan is credited with elevating its status and bringing it to the concert stage.

He was awarded India’s highest civilian honour, the Bharat Ratna, in 2001, becoming the Third classical musician after M. S. Subbulakshmi and Ravi Shankar to be accorded this distinction.