Ganger Rolf ASA was a Norwegian holding company for the Olsen family.

The company was listed on the Oslo Stock Exchange and had ownership positions in numerous companies primarily within the energy and shipping sectors, but also other areas such as real estate and mass media.

Ganger Rolf has its headquarters in Oslo, Norway.

The company is named after the Viking ruler of Normandy, Ganger Rolf.

Ganger Rolf merged with Bonheur in May 2016.