Mariana Brambilla (born 19 March 2000, in Porto Alegre, Brazil), is a female professional volleyball player, playing as an opposite.
On 16 January 2022, she signed with Greek powerhouse Panathinaikos. On 27 May 2022, she was announced by the French team Pays d'Aix Venelles Volley-Ball.
She competed for the Brazil women's national under-18 volleyball team at the 2017 FIVB Volleyball Girls' U18 World Championship.