Blood of the innocents
The girl, aged nine, who lives in the north-eastern state of Pernambuco, became pregnant with twins.
It is alleged that she had been sexually assaulted over a number of years by her stepfather.
The excommunication applies to the child's mother and the doctors involved in the procedure.
The pregnancy was terminated on Wednesday.
Abortion is only permitted in Brazil in cases of rape and where the mother's life is at risk and doctors say the girl's case met both these conditions.
The Archbishop of Olinda and Recife, Jose Cardoso Sobrinho, told Brazil's TV Globo that the law of God was above any human law.
He said the excommunication would not apply to the child because of her age, but would affect all those who ensured the abortion was carried out.
However, doctors at the hospital said they had to take account of the welfare of the girl, and that she was so small that her uterus did not have the ability to contain one child let alone two.
Ah yes, but twins? No wonder the Church intervened. That's more soldiers for God versus one dead child mother.
THE MAN UPSTAIRS DATE: Here is what the Archbishop actually said:
If His Archbishopness had anything to say about the perpetrator of this unspeakable crime against this child, nobody quoted it.