"King of My Castle" is a song by American electronic music producer Chris Brann under his Wamdue Project alias, with vocals by Gaelle Adisson.

It was originally released in 1997 as a downtempo song but became a worldwide club hit in 1999 when it was remixed by Italian house producer Roy Malone and included on the 1998 album Program Yourself.

The song peaked at number one on the US Billboard Dance Club Play chart, topped the UK Singles Chart, and peaked within the top 10 in at least 12 other countries, including Denmark, France, Germany, the Netherlands, and Norway.

The song's title and lyrics reference Sigmund Freud's theory of the unconscious which holds that the human ego is not free and is instead controlled by its own unconscious id[citation needed]—in Freud's own words, "das Ich ist nicht Herr im eigenen Hause" ("the ego is not king of its own castle").

Hence, one of the song's two music videos consists of footage from the 1995 anime film Ghost in the Shell, where people with cyborg implants have their actions controlled against their will by a hacker criminal known in the film as "puppetmaster".