Rolf Dahlgrün (19 May 1908, Hannover – 19 December 1969, Hamburg-Harburg) was a German politician for the FDP. From 1962 to 1966 he was Minister of Finance.
Dahlgrün studied law. He worked since 1936 for the Phönix Gummiwerke AG in Hamburg-Harburg. Some weeks before he died he was elected as chairman of the German chapter of World Wildlife Fund.
Before 1945 Dahlgrün was a member of the Nazi Party. In 1949 he became a member of the FDP. From 1953 to 1957 he was a member of the Hamburgische Bürgerschaft. From 1957 to 1969 he was a member of the Bundestag. From 1962 to 1966 he was Minister of Finance.