Mīrzā Najaf Khān Bahādur, simply known as Najaf Khan (b. 1723 – 26 April 1782 d.) was an adventurer of Safavid lineage who came to Delhi around 1740 from Iran after Nader Shah had displaced Safavid dynasty in 1736. He became a courtier of Mughal emperor Shah Alam II (1740 – 1782). He married his sister into the family of the Shia Nawab of Awadh, which resulted in him gaining the title of Deputy Wazir of Awadh. He served during the Battle of Buxar, and he was the highest commander of the Mughal army from 1772 till his death in April 1782.