John Winthrop Platner

John Winthrop Platner (1865 – 1921) was an American theologian.

Early life and education
He was born in Lee, Massachusetts, on May 15, 1865. He graduated from Yale College in 1885. He graduated from Union Theological Seminary in 1893. He studied at the Humboldt University of Berlin.

Career
He was an instructor at Union Theological Seminary, and a professor of ecclesiastical history at Harvard University and Andover Theological Seminary.

He was elected to the American Academy of Arts & Sciences in 1915.