Antônio Dumas Ramalho Esteves (born November 28, 1955 in Santo André, São Paulo) is a Brazilian football manager.
He played for Esporte Clube Bahia, Desportiva Leônico, Santos, S.C.
Olhanense and G.D.
Chaves.
He coached a number of team in Brazil, and Gabon, São Tomé and Príncipe, Togo and Equatorial Guinea in Africa.
Dumas explained in a letter sent to a Brazilian media that he wasn't dismissed from the Togolese national team.
It was he who wanted to leave, having received the job offer from the Equatoguinean Football Federation to be the coach of its national team.