Viengthong Siphandone (Lao: ວຽງ​ທອງ ສີ​ພັນ​ດອນ; born ?) is a Laotian politician and member of the Lao People's Revolutionary Party (LPRP). She is the daughter of former LPRP Chairman Khamtai Siphandon and sister of Sonexay Siphandone.^[1] She currently serves as President of State Audit Organization.^[1]

She was elected to the LPRP Central Committee at the 10th National Congress,^[1] and to the LPRP Secretariat at the 11th National Congress.

She is the wife of Khampheng Saysompheng.^[1]