In 1921, there were 2 recorded legal changes made affecting LGBT people. In the previous year, there were 1 change made and in the following year. A total of 13 legal changes were made in the 1920s.
- July 1Homosexual activity becomes male illegal, female legal.Up to 14 years in prison with hard labour
- February 5Same-sex marriage becomes banned.Until 2022, Tamaulipas defined a marriage as between a man and a woman, effectively banning same-sex marriage.
