Samdech Penn Nouth (Khmer: ប៉ែន នុត, Khmer pronunciation: [paen nuət]) (April 1, 1906 – May 18, 1985) was a Cambodian politician. He served in the French colonial administration, then took active part in Cambodian politics, was several times a Prime Minister of Cambodia (1953, 1954-1955, 1958, 1961) as part of the Sangkum regime of Prince Norodom Sihanouk. He was prime minister for the sixth time from 31 January 1968 to 14 August 1969.