Sixty-five members of the banned Muslim Brotherhood were sentenced to jail over incitement against the state, an Egyptian court ruled.
A court in the Nile Delta city of Zagazig sentenced 44 people to 10 years in prison, and the rest were sentenced to two years. Eight individuals were acquitted.
According to prosecutors, the group was caught with inflammatory leaflets opposing the army and state institutions, and called for violence.
Egypt, under president Abdel Fattah El Sisi, has launched its most rigorous sweeping crackdown on dissent in modern history. It has intensified ahead of the upcoming elections in March, when Mr El Sisi almost certain to win.
Earlier this month, Egyptian security forces arrested former Islamist presidential candidate Abdel Moneim Aboul Fatouh, 66, over his alleged links to the outlawed Muslim Brotherhood.
His detention follows the arrest on February 9 of Mohamed Al Qassas, deputy leader of Mr Aboul Fotouh’s Strong Egypt Party.