John Amadeus Devenanzio (born June 22, 1982),[1] better known as Johnny Bananas, is an American television personality, best known as a competitor on the MTV reality competition show The Challenge.

[3] He is known for a multitude of infamous moments on The Challenge such as keeping the $275,000 earnings from winning partner, Sarah Rice, after she eliminated him on a previous season, in Rivals 3 and being hoisted on the back of Chris "CT" Tamburello during an elimination in Cutthroat.

After filming for the thirty-third season of The Challenge had completed, Devenanzio started dating teammate and castmate and Big Brother: Over the Top winner Morgan Willett.

The couple split in September 2021 after Willett claimed Devenanzio was unfaithful.

[5][6] Devenanzio was previously in a relationship with Olympic champion Hannah Teter.