Eunice Mafalda Michiles (born June 10, 1929) is a Brazilian writer, teacher and politician.

In 1979, she took office as Senator for Amazonas, being the first woman to take office in the Federal Senate after Princess Isabel of Brazil.

[1][2] She was Federal Deputy for Amazonas between 1987 and 1991 by Liberal Front Party (PFL), participating of the 1988 Constituent Assembly.

[3][4] Michiles is a member of the Seventh-day Adventist Church.

[5] Darcy Humberto Michiles (PL) is her son.