An antipope is a person who makes a competing claim to the papacy, in opposition to the legitimately elected pope.

Newly elected as pope, Robert Prevost has chosen Leo XIV as his papal name. No pope has been named Leo since the early 1900s.

“He was an antipope who took over the Church,” a Justice official from Emilia-Romagna allegedly wrote on his Telegram channel after the death of Pope Francis. Today, he has been removed from ...