Rass is a Saudi Arabian City, located in Al Qassim Province. It lies southwest of Buraydah, the capital of the province and north of Riyadh, the national capital. Rass is the largest city in Al-Qassim province by area and third largest by population. Rass is Arabic for "an old well", and it was mentioned in a poem of Hassan Bin Thabit, the poet who was a companion of the Islamic prophet, Muhammad. The city is ruled by the Al Assaf family.