Idiot Prayer: Nick Cave Alone at Alexandra Palace is a concert film and live album by Australian musician Nick Cave. It was streamed globally to ticket holders online on 23 July 2020. It was filmed by cinematographer Robbie Ryan and features Cave performing solo on piano at Alexandra Palace in London. Although initially intended to be a one-time-only event, Idiot Prayer was released in extended form in cinemas on 5 November 2020 and as a live album on 20 November 2020.

Idiot Prayer serves as the final film in a trilogy—along with 20,000 Days on Earth (2014) and One More Time with Feeling (2016)—and was described by Cave as "its luminous and heartfelt climax".