In 2009, the Supreme Court of Mexico established in its Judgment No. 6/2008 (2009) that the right to personal identity and free development of personality includes the right to gender identity and to "sexual reassignment", which obliges states to provide access to the "rectification of name and sex legal markers". In 2018, the Court issued Judgment No. 1317/2017 (2018) where it analysed the most appropriate procedure to guarantee "sex-gender rectification in the Civil Registry". In summary, this judgment concluded that the type of authority (judicial or administrative) before which the procedure is conducted is irrelevant as long as the nature of the procedure is materially administrative. Specifically, it must (a) be comprehensive; (b) be based on free and informed consent, with no medical, psychological and/or pathologising requirements; (c) be confidential; (d) be expeditious and free of charge; and (e) it must not require surgical or hormonal treatments. Despite this, various Mexican have not unified their regulations and, in many cases, continue to require judicial processing and all sorts of evidence. 2004, Mexico City became the first region of Mexico to provide legal gender recognition. In 2009, the Supreme Court of Mexico established in its Judgment No. 6/2008 (2009) that the right to personal identity and free development of personality includes the right to gender identity and to "sexual reassignment", which obliges states to provide access to the "rectification of name and sex legal markers". In 2018, the Court issued Judgment No. 1317/2017 (2018) where it analysed the most appropriate procedure to guarantee "sex-gender rectification in the Civil Registry". In summary, this judgment concluded that the type of authority (judicial or administrative) before which the procedure is conducted is irrelevant as long as the nature of the procedure is materially administrative. Specifically, it must (a) be comprehensive; (b) be based on free and informed consent, with no medical, psychological and/or pathologising requirements; (c) be confidential; (d) be expeditious and free of charge; and (e) it must not require surgical or hormonal treatments. Despite this, various Mexican have not unified their regulations and, in many cases, continue to require judicial processing and all sorts of evidence.

In 2009, the Supreme Court of Mexico established in its Judgment No. 6/2008 (2009) that the right to personal identity and free development of personality includes the right to gender identity and to "sexual reassignment", which obliges states to provide access to the "rectification of name and sex legal markers". In 2018, the Court issued Judgment No. 1317/2017 (2018) where it analysed the most appropriate procedure to guarantee "sex-gender rectification in the Civil Registry". In summary, this judgment concluded that the type of authority (judicial or administrative) before which the procedure is conducted is irrelevant as long as the nature of the procedure is materially administrative. Specifically, it must (a) be comprehensive; (b) be based on free and informed consent, with no medical, psychological and/or pathologising requirements; (c) be confidential; (d) be expeditious and free of charge; and (e) it must not require surgical or hormonal treatments. Despite this, various Mexican have not unified their regulations and, in many cases, continue to require judicial processing and all sorts of evidence. "sexual reassignment", which obliges states to provide access to the "rectification of name and sex legal markers". In 2018, the Court issued Judgment No. 1317/2017 (2018) where it analysed the most appropriate procedure to guarantee "sex-gender rectification in the Civil Registry". In summary, this judgment concluded that the type of authority (judicial or administrative) before which the procedure is conducted is irrelevant as long as the nature of the procedure is materially administrative. Specifically, it must (a) be comprehensive; (b) be based on free and informed consent, with no medical, psychological and/or pathologising requirements; (c) be confidential; (d) be expeditious and free of charge; and (e) it must not require surgical or hormonal treatments. Despite this, various Mexican have not unified their regulations and, in many cases, continue to require judicial processing and all sorts of evidence.