Oslofjord is the fjord leading up to Oslo, Norway.
Oslofjord may also refer to:
- Any of several ships operated by the Norwegian America Line:
- SS Oslofjord, a ship used by the Norwegian America Line, 1923–1930
- MS Oslofjord (1937), an ocean liner operated by the Norwegian America Line, 1938–1940
- MS Oslofjord (1949), a combined ocean liner/cruise ship operated by the Norwegian America Line, 1949–1967
- MS Oslofjord (1993), a passenger ferry operated by Fjord Line
