Helena Bonciani Nader (born November 5, 1947) is a Brazilian biomedical scientist based at the Federal University of São Paulo.

Nader was born in São Paulo, to a family of Syrian, Lebanese and Italian descent.

She studied biomedical sciences at the Federal University of São Paulo and graduated with a bachelor's degree in 1970.

[1] She simultaneously earned a bachelor's degree in education at the University of São Paulo, before beginning her doctoral studies in molecular biology.

[1][9][3] She has been a member of the Brazilian Society for the Advancement of Science since 1969, and took part in resistance to the military dictatorship.