| Frank Belfrage | |
| Office: | State Secretary for Foreign Affairs |
| Primeminister: | Fredrik Reinfeldt |
| 1Blankname: | Minister |
| 1Namedata: | Carl Bildt |
| Term Start: | 6 October 2006 |
| Term End: | 3 October 2014 |
| Predecessor: | Hans Dahlgren |
| Successor: | Annika Söder |
| Office2: | Ambassador of Sweden to France |
| Term Start2: | December 2001 |
| Term End2: | 6 October 2006 |
| Predecessor2: | Örjan Berner |
| Successor2: | Gunnar Lund |
| Office3: | Swedish Ambassador to Saudi Arabia |
| Term Start3: | 1984 |
| Term End3: | 1987 |
| Predecessor3: | Fredrik Bergenstråhle |
| Successor3: | Lennart Alvin |
| Birth Name: | Frank Kurt Claude Belfrage |
| Birth Date: | 13 March 1942 |
| Birth Place: | Stockholm, Sweden |
| Alma Mater: | Stockholm School of Economics Foreign Ministry Diplomat School |
Frank Kurt Claude Belfrage (born 13 March 1942) is a Swedish economist and diplomat who was State Secretary for Foreign Affairs between 2006 and 2014, heading the Ministry for Foreign Affairs under then Minister for Foreign Affairs Carl Bildt. He was previously Ambassador of Sweden to the European Union from 1994 to 1999 and Ambassador of Sweden to France from 2001 to 2006.
Belfrage is a member of the noble Belfrage family. He is the son of diplomat Kurt-Allan Belfrage and his wife, Renée France Paule Puaux. He is the nephew of Leif Belfrage who was State Secretary for Foreign Affairs from 1956 to 1967. He is married and has four daughters.
Belfrage was part of the 2016 SVT documentary "Springnotan"[1] revealing to the Swedish people how some of their political leaders hid money from tax authorities. Belfrage used a temporary tax amnesty, avoiding imprisonment, where his name was revealed.