Arizona Proposition 107 was a proposed same-sex marriage ban, put before voters by ballot initiative in the 2006 general election.

If passed, it would have prohibited the U.S. state of Arizona from recognizing same-sex marriages or civil unions.

[2] This proposed amendment to the Arizona Constitution failed, with 48.2% voting in favor and 51.8% opposed, making Arizona the first U.S. state to defeat a state constitutional amendment banning same-sex marriage.

Voters approved a more limited constitutional amendment which banned same-sex marriage but not state-recognized civil unions or domestic partnerships, 2008 Arizona Proposition 102, in 2008 with 56% of the vote.

An Initiative Measure Proposing an amendment to the Constitution of Arizona; amending the Constitution of Arizona; by adding Article XXX; relating to the protection of marriage To preserve and protect marriage in this state, only a union between one man and one woman shall be valid or recognized as a marriage by this state or its political subdivisions and no legal status for unmarried persons shall be created or recognized by this state or its political subdivisions that is similar to that of marriage.