Emmanuel Schelstrate (1649 – 6 April 1692) was a Catholic theologian born at Antwerp in 1649. While he was a canon of the cathedral of Antwerp, he was called to Rome by Pope Innocent IX and made an assistant librarian of the Vatican Library. He was a fine scholar in early ecclesiastical history and became the accredited defender of the papal supremacy. For this reason his writings have often been very severely judged. He died at Rome on 6 April 1692.