Lynne Feltham Stewart (born October 8, 1939) is an American radical activist. As an attorney she represented controversial, radical, and often unpopular defendants.
In 2005, Stewart was convicted on charges of conspiracy and providing material support to terrorists, and sentenced to 28 months in prison. Her felony conviction led to her being automatically disbarred. She was convicted of helping pass messages from her client, Sheikh Omar Abdel-Rahman, an Egyptian cleric convicted of planning terror attacks, to his followers in al-Gama'a al-Islamiyya, an organization designated as a Foreign Terrorist Organization by the United States Secretary of State.
She was re-sentenced on July 15, 2010 to 10 years in prison in light of perjury at her trial and other factors not properly considered against her by the sentencing judge.