| Office: | County Governor of Telemark |
| Term Start: | 1939 |
| Term End: | 1959 |
| Primeminister: | Johan Nygaardsvold Einar Gerhardsen Oscar Torp |
| Predecessor: | Didrik Cappelen |
| Successor: | Tidemann Flaata Evensen |
| Office2: | Minister of Finance |
| Term Start2: | 13 November 1936 |
| Term End2: | 1 July 1939 |
| Primeminister2: | Johan Nygaardsvold |
| Predecessor2: | Adolf Indrebø |
| Successor2: | Oscar Torp |
| Office3: | Minister of Social Affairs |
| Term Start3: | 20 March 1935 |
| Term End3: | 13 November 1936 |
| Primeminister3: | Johan Nygaardsvold |
| Predecessor3: | Trygve Utheim |
| Successor3: | Oscar Torp |
| Office4: | Member of the Norwegian Parliament |
| Term Start4: | 1 January 1928 |
| Term End4: | 4 December 1945 |
| Constituency4: | Hordaland |
| Birth Name: | Kornelius Olai Person Bergsvik |
| Birth Date: | 18 March 1889 |
| Birth Place: | Austrheim, Hordaland, Sweden-Norway |
| Death Place: | Austrheim, Hordaland, Norway |
| Spouse: | Berte Margrethe Selvik |
| Party: | Labour |
Kornelius Olai Person Bergsvik (18 March 1889 – 2 May 1975) was a Norwegian politician for the Labour Party, born in Austrheim, Hordaland. Bergsvik represented Hordaland in the Norwegian Parliament from 1928 to 1945.[1] In 1936 he was appointed to the Nygaardsvold Cabinet.[2] Bergsvik served as Minister of Social Affairs 1935 - 1936, and Minister of Finance 1936 - 1939.[3] After resigning from the government in 1939, he was County Governor of Telemark from 1939 to 1940, and again from 1945 to 1959.[1]