The Nawab of Awadh or the Nawab of Oudh was the title of the rulers who governed the state of Awadh in north India during the 18th and 19th centuries. The Nawabs of Awadh belonged to an Iranian dynasty of Sayyid origin from Nishapur, Iran. In 1724, Nawab Sa'adat Khan established the Oudh State with their capital in Faizabad and Lucknow.

The Oudh State was a Mughal subah, then an independent kingdom, and lastly a princely state in the Awadh region of North India until its annexation by the British in 1856. The name Oudh, now obsolete, was once the anglicized name of the state, also written historically as Oudhe.