Book is the 23rd studio album by New York City-based alternative rock band They Might Be Giants, released on November 12, 2021.

[4] On AllMusic Heather Phares wrote, "Comprising an album and a 144-page collection of photos by Brian Karlsson and lyrics expressively rendered by a 1970s IBM Selectric typewriter, Book is an audiovisual celebration of the band's enduring strengths...

"[1] On PopMatters Chris Conaton said, "After 40 years and 20-plus albums that span many, many genres but are almost always filled with big hooks and endearing bizarreness, They Might Be Giants are as energetic and interesting as ever.

The fact that they've always had an absurdist bent and an experimental side essentially lets them do whatever they want.... [Book is] a thoroughly enjoyable record from start to finish.

"[6] In Glide Magazine Shawn Donohue wrote, "The album is accompanied by a 144-page full-color, cloth-bound hardcover which features original work by Brooklyn photographer Brian Karlsson and lyrics selected from several TMBG albums set in typographical illustrations by graphic designer Paul Sahre.... On Book (the record) They Might Be Giants continue to pump out what they always have, smart earworm pop tunes that are slightly odd, tastefully corny and instantly catchy.