Charles Pinckney was an Episcopalian.
He was identified as an Episcopalian by: the Library of Congress and A Worthy Company: Brief Lives of the Framers of the United States Constitution by M. E. Bradford. (Source: Ian Dorion, "Table of the Religious Affiliations of American Founders", 1997).
From: Robert G. Ferris (editor), Signers of the Constitution: Historic Places Commemorating the Signing of the Constitution, published by the United States Department of the Interior, National Park Service: Washington, D.C. (revised edition 1976), pages 202-204:
Only 29 years old in 1787, Pinckney was one of the youngest and most able delegates at Philadelphia [at the Constitutional Convention]... He governed South Carolina for four terms and also served as U.S. Senator and Representative, as well as Minister to Spain.
Charles Pinckney, the second cousin of fellow-signer Charles Cotesworth Pinckney, was born at Charleston, S.C., in 1757.
...He died in 1824, just 3 days after his 67th birthday. He was laid to rst in Charleston at S. Philip's Episcopal Churchyard.
Charles Pinckney should not be confused with his similarly-named relative Charles Cotesworth Pinckney (or Charles C. Pinckney), who was also a signer of the U.S. Constitution.
Note that numerous sources and authoritative references have been consulted in order to ascertain the religious affiliation of the American Founding Fathers. Note that the excerpts and references mentioned on this page are not the only references used in order to identify this person's religious affiliation.