Timothy Andrew Wohlforth (born May 15, 1933), is a former United States Trotskyist leader. Since leaving the Trotskyist movement he has become a writer of crime fiction and of politically oriented non-fiction.
As a student, Wohlforth joined the youth section of Max Shachtman's Independent Socialist League (ISL), the Socialist Youth League in 1953. He broke with Shachtman in 1957 when the ISL moved rightward to merge with the Socialist Party of America. Later that year, Wohlforth and a minority of ISL members joined the Socialist Workers Party (SWP), which was the main Trotskyist group in the US at the time.
In the early 1960s when the SWP and its supporters internationally in the International Committee of the Fourth International fused with the International Secretariat of the Fourth International and developed a critical but generally supportive attitude towards the Cuban Revolution, a minority of members led by Wohlforth and James Robertson (another former ISL member) formed the Revolutionary Tendency within the SWP. While Robertson left the SWP in 1962 and went on to form the Spartacist Group, later Spartacist League, Wohlforth and his supporters remained within the SWP and fought for the perspective of the International Committee of the Fourth International (ICFI). They were expelled in 1964 after demanding a discussion of the significance of the Sri Lankan Lanka Sama Samaja Party's entry into the government of Mrs. Sirimavo Bandaranaike. The US supporters of the ICFI formed the American Committee of the Fourth International, and in 1966 they formed the Workers League.