Phitsanulok Mansion (Thai: บ้านพิษณุโลก) or formerly known Banthomsinth House (Thai: บ้านบรรทมสินธุ์ lit: House of the Sleeping Narayana) is the official residence of the Prime Minister of Thailand, located not far to the east from the government house in Dusit, Bangkok. The mansion was originally built at the behest of King Rama VI was and given to his aide-de-camp, .