Hinrich Wilhelm Kopf (6 May 1893 – 21 December 1961) was a German politician (SPD). He joined the SPD in 1919. He served as Prime Minister of the short-lived State of Hanover in 1946 and then as Minister President of Lower Saxony from 1946 to 1955 and from 1959 to 1961. He served as the third President of the Bundesrat from 7 September 1951 to 6 September 1952.
Kopf was born in Neuenkirchen, Hanover, and died in Göttingen.