Morsi was awarded jail term for ordering the arrest and torture of protesters during his rule, BBC reported.
He was deposed by the army in July 2013 following mass street protests against his rule.
Morsi and his Muslim Brotherhood came to power in elections after Hosni Mubarak's ouster, only to find themselves behind bars a year later when people protested against them for their atrocities. They were overthrown by military government led Abdel Fattah Saeed Hussein Khalil el-Sisi.
The case stems from violence outside the presidential palace in December 2012. Morsy's supporters attacked opposition protesters, sparking clashes that killed at least 10 people.
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Morsi and 14 other Brotherhood figures escaped a more serious charge of inciting the killing of protesters, which could have carried the death sentence.
Most of the other defendants were also given 20-year prison sentences.