Petter Mørch Koren (22 January 1910 – 14 November 2004) was a Norwegian politician for the Christian Democratic Party. He was a deputy member of Hedrum municipality council in the period 1937–1938 and held various positions in Oslo city council between 1947 and 1965. He was temporary County Governor of Akershus from 1966 to 1970, and County Governor from 1970 to 1979. From August to September 1963 he served as the Minister of Justice and the Police during the short-lived centre-right cabinet Lyng. In 1972 he was again appointed to this post in the cabinet Korvald, which lasted until 1973.