The Fourth International can refer to:

• The Fourth International - World Party of Socialist Revolution, founded by Trotskyists in 1938, which organisationally continues as the Fourth International (post-reunification)
• Various groups which claim the political heritage of the Fourth International:
  • The Fourth International (ICR)
  • The Fourth International Posadist
  • The International Committee of the Fourth International
• The Communist Workers' International of left communists, founded in 1923.

• List of Trotskyist internationals

This disambiguation page lists articles associated with the title Fourth International.
If an internal link led you here, you may wish to change the link to point directly to the intended article.