Marcos Sampaio Olsen

Marcos Sampaio Olsen is a Brazilian navy admiral, incumbent Brazilian Navy Commander. He joined the military career in 1979 and was declared Midshipman in 1982. Olsen acted as commander of minesweeper NV Atalaia (M-17) and submarine S Tapajó and as executive officer of submarine S Tamoio and aircraft carrier NAe São Paulo.
In 2011, Olsen was promoted to Rear Admiral and assumed many offices in the Navy. In December 2017, Olsen was responsible of the General Management of Nuclear and Technological Development of the Navy, responsible for planning and coordination of all activities related to the development of nuclear technology.
On 30 December 2022, then Brazilian president Jair Bolsonaro nominated Olsen as Navy Commander, officialized on 5 January 2023 by president Luiz Inácio Lula da Silva.