Tuek Phos District (; literally "Emerging Water") is a district ("srok") in the west of Kampong Chhnang Province, in central Cambodia. The district capital is Tuek Phos town located on the rail line some 28 kilometres south west of the provincial capital of Kampong Chhnang by road. The district shares a border with Pursat and Kampong Speu provinces to the west. The National Railway line from Phnom Penh to Sisophon runs through the district entering in the south and exiting in the north west.