Gustav Magnar Witzøe

Gustav Magnar Witzøe (born February 8, 1993, in Frøya Municipality) is a Norwegian billionaire and significant shareholder of salmon fish farming company SalMar ASA. He is one of the youngest billionaires in the world, his father having made him SalMar's main shareholder for inheritance tax purposes when he was 18.

Early life Witzøe was born in Frøya Municipality in Trøndelag county, to businessman Gustav and carer Oddny Witzøe. His father founded SalMar, which is one of the world's largest producers of farmed salmon. SalMar also owns a significant stake in Scottish Sea Farms, the UK's second-largest salmon farmer. Aged 18, his father made him SalMar's main shareholder, primarily for inheritance tax purposes.