| Office: | Minister of Industry |
| Term Start: | 20 January 1964 |
| Term End: | 12 October 1965 |
| Primeminister: | Einar Gerhardsen |
| Predecessor: | Trygve Lie |
| Successor: | Sverre W. Rostoft |
| Office2: | Minister of Pay and Prices |
| Term Start2: | 25 September 1963 |
| Term End2: | 20 January 1964 |
| Primeminister2: | Einar Gerhardsen |
| Predecessor2: | Ole Myrvoll |
| Successor2: | Idar Norstrand |
| Term Start3: | 1 September 1962 |
| Term End3: | 28 August 1963 |
| Primeminister3: | Einar Gerhardsen |
| Predecessor3: | Gunnar Bøe |
| Successor3: | Ole Myrvoll |
| Birth Date: | 19 February 1917 |
| Birth Place: | Vadsø, Finnmark, Norway |
| Nationality: | Norwegian |
| Party: | Labour |
| Occupation: | Politician Judge Jurist |
Karl Trasti (19 February 1917 - 4 October 1976) was a Norwegian civil servant and politician for the Labour Party.
During the third cabinet Gerhardsen he was appointed state secretary to the Minister of Finance in 1955, a post he held one year. He was later appointed Minister of Pay and Prices in 1962, and held that post to 1964 except for the month-long tenure of the cabinet Lyng in 1963. He then changed to Minister of Industry, but lost his job when the cabinet fell in 1965.
Born in Vadsø and graduating as cand.jur. in 1942, he notably worked as a judge during the legal purge after World War II. He was a secretary and consultant in the Ministry of Finance from 1943 to 1953, and director of the Norwegian Customs Authorities (named the Norwegian Customs and Excise Authorities from 1974) from 1957 to 1976, the year he died.
Trasti never held elected political office.