| Benedikt Gröndal | |
| Office: | 21st Prime Minister of Iceland |
| President: | Kristján Eldjárn |
| Term Start: | 15 October 1979 |
| Term End: | 8 February 1980 |
| Predecessor: | Ólafur Jóhannesson |
| Successor: | Gunnar Thoroddsen |
| Office2: | Minister of Foreign Affairs |
| Term Start2: | 1 September 1978 |
| Term End2: | 8 February 1980 |
| Primeminister2: | Ólafur Jóhannesson Himself |
| Predecessor2: | Einar Ágústsson |
| Successor2: | Ólafur Jóhannesson |
| Birth Date: | 7 July 1924 |
| Birth Place: | Önundarfjörður, Kingdom of Iceland |
| Death Place: | Reykjavík, Iceland |
| Party: | Social Democratic Party |
| Alma Mater: | Harvard University University of Oxford |
Benedikt Sigurðsson Gröndal (pronounced as /en/; 7 July 1924 – 20 July 2010) was a Islandic politician who served as prime minister of Iceland from 1979 to 1980. A member of the Social Democratic Party, he was minister of Foreign Affairs from 1978 to 1980 and the only prime minister who has served in two cabinet roles simultaneously.[1]
His government was the second Social Democrat minority government of Iceland, formed after the collapse of Ólafur Jóhannesson's cabinet, with Gröndal's cabinet only being formed as a temporary solution until the 1979 parliamentary election. His cabinet was defeated in the election and his party was not asked to form the next cabinet. Gröndal was a member of Althingi from 1956 to 1982 and led his party from 1974 to 1980. He attended the General Assembly of the United Nations in 1966.
After leaving the political scene in 1982, Gröndal was appointed ambassador of Iceland to Sweden and Finland. After residing for some years in Stockholm, he served as roving ambassador to the Far East, including Australia, China, South Korea and Japan. After serving two years as representative to the United Nations, Benedikt Gröndal retired to his native home in 1991.[2] He died on 20 July 2010 at the age of 86.[3]