Sali Vongkhamsao (; 29 September 1925 – 23 January 1991) was a Laotian politician and member of the Lao People's Revolutionary Party (LPRP).
He became a substitute member of the LPRP Central Committee, and was elected to full membership at the 3rd National Congress. Vongkhamsao was also the Minister of Economy, Planning and Finance and a member of the National Assembly. He was named Deputy Prime Minister in 1982; the same year he also became chairman of the State Planning Committee.
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