Maria Beatriz Fonseca Corrêa do Lago, better known as Bia Corrêa do Lago (Rio de Janeiro, April 3, 1958) is a Brazilian writer, journalist and researcher.
She is the daughter of writer Rubem Fonseca, who was awarded the highest literary award in the Portuguese language – the Prêmio Camões – and is the author of numerous books, including Agosto, O Caso Morel, O Cobrador, and Bufo & Spallanzani.