"Stupid Mistake" is a song by British-based Australian singer-songwriter Darren Hayes, released as the fourth single from his fourth studio album, Secret Codes and Battleships, on 7 May 2012.

The track was written by Hayes and long-time writing collaborator Robert Conley, and was co-produced by Justin Shave, who was credited as one of the main producers on Hayes's third studio album, This Delicate Thing We've Made.

The track was hand-picked by Hayes for release as a single, due to its popularity amongst fans and its personal meaning to himself.

The music video for "Stupid Mistake" premiered on Hayes' official YouTube account on 5 April 2012, at a total length of three minutes and forty-seven seconds.

The video was directed and produced by Richard Cullen, Hayes' husband.