Regeneración was a Mexican anarchist newspaper that functioned as the official organ of the Mexican Liberal Party. Founded by the Flores Magón brothers in 1900, it was forced to move to the United States in 1905. Jesús Flores Magón published the paper, while his brothers Ricardo and Enrique contributed articles. The Spanish edition of Regeneración was edited by Ricardo, and the English version by W. C. Owen and Alfred G. Santleben.

The Mexican Liberal Party was started in August 1900 when engineer Camilo Arriaga published a manifesto entitled Invitacion al Partido Liberal. The invitation was addressed to Mexican liberals who were dissatisfied with the way the government of Porfirio Díaz was deviating from the liberal Constitution of 1857. Arriaga called on Mexican liberals to form local liberal clubs, which would then send delegates to a liberal convention.