Andrea Chahad Guedes Vieira, also known as Dadá Vieira (born 5 February 1971) is a former tennis player from Brazil.
She upset Hana Mandlikova, who was seeded 14th in the womenâÂÂs singles draw, in the first round of the 1989 French Open and reached the third round of that tournament. That November, she reached a career-best ranking of world No. 76. She also represented Brazil in the 1992 Summer Olympics.