Mian Ghaus Khan (died 1814), also known as Mian Ghausa, was a Punjabi Muslim of Muslim Rajput descent who served as an artillery officer of the Sukerchakia Misl under Sardar Maha Singh. After Maha Singh's death, Ghaus Khan served his son, Ranjit Singh, the founder of the Sikh Empire. Ghaus Khan's son, Sultan Mahmud Khan (d. 1859) and grandson, Sultan Ahmad Ali Khan, too served in the Sikh Khalsa Army.