Marta de Souza Sobral (born 23 March 1964 in São Paulo) is a former Brazilian female basketball player.

Sobral, while a member of the Brazil women's national basketball team, participated in three Summer Olympics (1992, 1996, 2000), and won a medal in two of them (1996 and 2000).

She is the sister of fellow Brazilian basketball Olympian Leila Sobral.

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