"Mistaken Identity" is a song written by Billy Mann and Delta Goodrem.

It was produced and co-written by Mann for Goodrem's second album, Mistaken Identity (2004).

"Mistaken Identity" opens with lyrics about Goodrem's cancer ordeal and how it changed her outlook on life.

Lyrically, the song is darker, harsher, and edgier than Goodrem's previous recordings, and is written in a nine-eight time signature.

[3] It was certified gold but quickly fell down the charts, spending only seven weeks in the top 50.