Brazil's doctors said the first baby was born to a woman who had a gut transplant by a dead donor.
Eleven previous births have used transplantation, but by a live donor, who is usually a member of the family or friend.
Experts said that using wombs of dead women could make more transplants possible.
The baby was born in December last year by a woman born without a oxygen because of a strange syndrome. Initially, the 32-year-old psychologist feared the transplant, says doctor Dani Ejzenberg, the doctor responsible for the transplant team in the Faculty of Medicine of the University of Sao Paulo.
"This was the most important event of life," he said. "Now we come to learn the baby and she's very happy."
The woman became pregnant through in vitro fertilization seven months after the transplant. The donor was a 45-year-old woman who had three children and a heart attack died.
The donor, whose identity was not given, gave birth to a Caesarean section. The doctors also removed the cattle, in part so that the woman did not have to take medication to avoid the refusal of the transplant. Nearly a year later, the mother and baby are healthy.
Two other transplants are planned as part of a study by Brazilian doctors. Details of the first case were published on Tuesday in the Lancet medical magazine.
In 2016 doctors at the Cleveland Clinic transplanted a deceased donor's door, but failed because of an infection.
"The group of Brazilian doctors have shown that the use of deceased donors is a practical option," says doctor Tommaso Falcone, who was part of the Ohio case. "It could give us more organs than we thought possible."