Sorsa's fourth cabinet was the 63rd government of Finland, which existed for 1 456 days, from 6 May 1983 to 30 April 1987. The government’s Prime Minister was Kalevi Sorsa. It was a majority government based on the ”red-soil government” model, as it was a coalition formed by the Social Democrats, the Centre Party, the Swedish People’s Party, and the Rural Party.

Taisto Kalevi Sorsa was a Finnish politician who served as Prime Minister of Finland three times: 1972–1975, 1977–1979 and 1982–1987. At the time of his death he still held the record for most days of incumbency as prime minister. He was also a long-time leader of the Social Democratic Party of Finland.