Frank Jensen (born 28 May 1961) is a Danish politician of the Danish Social Democrats who has been serving as Lord Mayor of Copenhagen since 1 January 2010.
He was Minister for Research 27 September 1994 to 30 December 1996 in the Cabinet of Poul Nyrup Rasmussen II and Justice Minister from 30 December 1996 to 27 November 2001 in the Cabinets of Poul Nyrup Rasmussen III and IV.