Carsten Johan Koch (born April 27, 1945) is a Danish economist and former Social Democratic politician and minister.
He graduated from Lyngby State School in 1964 and received a cand.polit.
From 1982 to 1993, he was an economist with the Arbejderbevægelsens Erhvervsråd [da] (Economic Council of the Labour Movement).
Koch was the director of Danske Bank from 1 September 2000 until 2008, when he became chairman of the Skattekommissionen [da] (Danish Tax Commission).
In 2010, he was appointed president of the Beskæftigelsesrådet [da] (Employment Council).