Gabriel Maurice Mandrillon (23 August 1902 – 11 February 1981) was a French skier. He was the brother of Camille Mandrillon.
Mandrillon was born in Les Rousses. In 1923, he was fourth in the international ranking of ski jumping. He was a member of the national Olympic military patrol team in 1924 which placed third. At the 1928 Winter Olympics he finished 33rd at the 18 km cross-country skiing event. He died in Lons-le-Saunier.