The Bones of What You Believe is the debut studio album by Scottish synth-pop band Chvrches, released on 20 September 2013 by Virgin Records and Goodbye Records. Recorded between 2011 and 2013 in Glasgow, the album was written, composed, and produced by the band as a collaborative effort. It was made available as both a 12-track standard edition and an 18-track special version, the latter including two extra songs, two remixes and two live videos. The album was debuted with a launch party broadcast live on music streaming platform Boiler Room.

The album's title derives from a lyric in the song "Strong Hand"; according to frontwoman Lauren Mayberry, it refers to the raw "creativity and effort" that served as the figurative and literal skeleton for the album. Musically, The Bones of What You Believe is primarily a synth-pop and indie pop album that incorporates 1980s influences.

The Bones of What You Believe received critical acclaim, with many complimenting Mayberry's songwriting and vocal performance, and Iain Cook and Martin Doherty's use of synthesisers and vocal loops. The album debuted at number nine on the UK Albums Chart, selling 12,415 copies in its first week. It also reached the top 15 in Australia, Ireland and the United States, and the top 20 in Austria and Canada. The album has sold 152,514 copies in the UK and 184,000 copies in the US. Pitchfork ranked The Bones of What You Believe at number 180 on its list of "The 200 Best Albums of the 2010s".

The album spawned seven singles: "The Mother We Share", "Recover", "Gun", "Lies", "We Sink", "Under the Tide" and "Tether", with the lead single becoming a moderate commercial success, charting in the top 10 in Belgium and Japan, as well as the top 40 in the United Kingdom. It also peaked at number 12 on the Alternative Songs chart in the United States.

On 20 October 2023, the 10 Year Anniversary Special Edition of the album was released, which included an additional 4 new tracks and 5 live tracks.