I live in Ontario Canada, we were married in the USA, for the marriage to be legal in Ontario does it need to be registered with the Ontario government?

This information may not apply to same-sex couples. But, for male/female marriages, this information might be helpful.

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Obtaining a legal marriage license is always determined by where the
Marriage takes place. An original marriage certificate, issued by the
U.S. Office of the County Clerk, is recognized internationally as a
Legally binding document. Members of the Hague Convention (Canada and
The U.S. are two) have agreed to recognize each others public
Documents when attached to an "apostille". You don't need
"permission" from Canada, if your marriage certificate is legal in the
States, it will be legal in Canada. Chances are you wouldn't need an
Apostille for Canada either (although it wouldn't hurt to have one),
Perhaps you could call your local municipal office in Canada and ask.

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Google Answers: Canadian citizens marrying in the U.S.