"2 + 2 = 5" is a song by the English rock band Radiohead.

"2 + 2 = 5" is a rock song that builds to a loud climax.

[2] It was recorded as a studio test and finished in two hours.

[3] The title is a reference to the slogan "two plus two equals five" from the 1949 dystopian novel Nineteen Eighty-Four by George Orwell.

[5] In 2020, the Guardian named the live version of "2 + 2 = 5" included in the 2004 EP Com Lag the 31st-greatest Radiohead song, writing that it was Thom Yorke's "polemical anthem for the era of mass-broadcast deception and enhanced interrogation techniques".