Gregory Orrin Brewer (born July 6, 1951) was the fourth bishop of the Episcopal Diocese of Central Florida.

After studies at Virginia Theological Seminary he was ordained to the diaconate on June 5, 1976, and to the priesthood on January 6, 1977.

He is currently a member of Communion Partners, an Episcopalian group which opposed the 77th General Episcopal Convention's decision to authorize the blessing of same-sex marriages in 2012.

[1] The measure to allow the blessing of same-sex unions won by a 111–41 vote with 3 abstentions.

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