Mathematics Presents Wu-Tang Clan & Friends Unreleased

Mathematics Presents - Wu-Tang Clan & Friends Unreleased  is a compilation produced by rap music producer Mathematics. It was released on February 6, 2007 under label Nature Sounds. It contains unreleased songs by Wu-Tang Clan and their affiliates.

Later, in 2010, Mathematics produced Return of the Wu and Friends.

Reception
Impose described the collection as "a 20-tuned compilation of remixes, B-sides and obscure Wu material", with a "continuous swinging baseline", a "soulful musical setting which provide a fine contrast to the rappers lyrical grit", and "sounds that stem from the comforting to the intimidating". Nevertheless, the magazine also described the collection as "appeal[ing] more to the Wu-head than the casual Wu-Tang fan".

Complex called one song from the collection, Maxine (Remix), "told over a heavy-duty 1970s experience" but "smooth[ed ]out considerably with an easy-like-Sunday-morning groove".

HipHopDX praised the compilation as a "testament to the knob twisting skills of Mathematics", but also stated that "the Clan's core members don’t make enough unheard appearances on the disc".