Peter Oxenbridge Thacher (1752–1802) was a Congregationalist minister in Massachusetts.

Peter Thacher was born in Milton, Massachusetts on March 21, 1752.

In 1794, he was elected a Fellow of the American Academy of Arts and Sciences.

On October 8, 1770, he married Elizabeth Poole (Hawkes); they had ten children.

[1][7] Peter Thacher died in Savannah, Georgia on December 16, 1802.