Marina Viotti (born 30 April 1986) is a Swiss-French mezzo-soprano.

Marina Viotti was born on April 30, 1986, in Lausanne, in the canton of Vaud. A dual French-Swiss national, she is the daughter of Swiss conductor Marcello Viotti and French violinist Marie-Laurence Geneviève Jacqueline Bret, and the sister of conductor Lorenzo Viotti. She has a younger brother, Alessandro, a horn player at the Lyon Opera, and a younger sister, Milena, also a horn player at the Munich Opera. She spent her childhood in various places, notably in Lorraine. Following her father's death in 2005, she moved to Lyon with her family.