This document provides a comparative analysis of same-sex marriage in Canada, the United States, and Japan. In Canada, same-sex marriage is legally recognized and was first legalized at the provincial level. In the US, it is not recognized federally but is legal in some states and public opinion is shifting in favor. Japan recently allowed same-sex marriage for Japanese citizens marrying foreign partners where it is legal, representing progress among Asian nations. Attitudes toward same-sex marriage are changing globally due to social and legal developments as well as traditional and new media coverage of LGBT rights issues.