Innocent III (born Lando Di Sezze) was an antipope from 29 September 1179 to January 1180.

Innocent III was born in Sezze in the Papal States and died in La Cava, Apulia.

[1] Of German descent, Cardinal Sezze was elected Innocent III on 29 September 1179 by an anti-Alexander faction.

Alexander, in January 1180, dispatched his opponent to the abbey of La Trinità della Cava, where he died.

Innocent III and his supporters were then locked up for life in the monastery of La Cava in January 1180.