The decision by the church, which has about 1.9 million members in the United States, follows the U.S. Supreme Court’s landmark decision last week to legalize same-sex marriage nationwide.
The big change came at the Episcopalian General Convention in Salt Lake City this week.
The convention’s House of Deputies, which is made up of clergy and lay members, voted strongly in favor of two key resolutions Wednesday.
One removed from church canons language that defined marriage being as between a man and a woman; the other approved two new liturgies adapted for both same-sex and opposite-sex marriages.
The convention’s House of Bishops had passed the resolutions the day before. They will take effect in late November.