| Kai Sjøberg | |
| Fullname: | Kai Otto Sjøberg |
| Birth Date: | 29 April 1936 |
| Position: | forward |
| Years1: | 1959–1961 |
| Clubs1: | Hugin |
| Years2: | 1961–1971 |
| Clubs2: | Skeid |
| Years3: | 1972–1975 |
| Clubs3: | Eidsvold Turn |
| Nationalyears1: | 1965–1966 |
| Nationalcaps1: | 2 |
| Nationalgoals1: | 2 |
| Nationalyears2: | 1965–1967 |
| Nationalcaps2: | 4 |
| Nationalgoals2: | 1 |
Kai Sjøberg (29 April 1936 – 15 September 1994) was a Norwegian football striker. He mainly played for Skeid, becoming league champion in 1966 and cup champion in 1963 and 1965. He represented Norway as a B and senior international.