Mian Ghaus Khan (died 1814), better known as Mian Ghausa, was a Punjabi Muslim who served as an artillery officer for Sardar Maha Singh of Sukerchakia Misl and later his son Ranjit Singh, founder of the Sikh Empire.

In 1799, he accompanied Ranjit Singh and his mother-in-law, Sada Kaur in the conquest of Lahore from the Bhangi Misl.

Ghaus Khan became artillery commander of Khalsa Army in 1804, and was rewarded with jagirs of Van and Bharoval in Amritsar district, along with a mansion in Lahore.

[2][1] In 1807, he commanded the operation with the six-year old Prince Kharak Singh, when he was sent to capture the fort of Sheikhupura.

[1] After his death, his son Sultan Mahmud Khan (d. 1859) too served as an artillery officer in the army of Ranjit Singh.