| Formation: | 2022 |
| Abbreviation: | ITO/OTI |
| Predecessor: | Coordinating Committee for the Refoundation of the Fourth International |
| Merger: | the ITO, the League for the Fifth International (LFI) & International Socialist League (ISL) in the future (unofficial) |
| Type: | Association of Trotskyist political parties and organisations |
| Region: | Worldwide |
| Membership: | 1 ≈ 6 |
| Key People: | Leon Trotsky Marco Ferrando |
| Affiliations: | Trotskyism, Marxism Socialism, Revolutionary socialism, Unionism, Activism |
| Website: | https://ito-oti.org/en/ |
The International Trotskyist Opposition (ITO) is a newly formed Trotsky international association. Its name in Italian is Opposizione Trotskista Internazionale (OTI). It was formed in 2022. It has members in Italy, Denmark France, Hungary, the United Kingdom and the United States. It was founded by the Workers' Communist Party in Italy that was originally part of the CRFI, but spilt from the International before the dissolution in 2020.
| Italy | Partito Comunista dei Lavoratori, | Workers' Communist Party |