This is a comprehensive discography of the Japanese noise musician Masami Akita, best known for his project Merzbow. Since 1980 he has released hundreds of recordings, collaborated with dozens of musicians, contributed over two hundred exclusive tracks to compilations, and made numerous guest appearances on recordings by other artists.

Akita has released recordings on over a hundred independent labels all over the world. Some of the labels which have made multiple releases include: Alchemy, Alien8, Blossoming Noise, Cold Spring, Cuneiform, Dirter Promotions, Extreme, Hydra Head, Important, Mego, Release Entertainment (a sublabel of Relapse), RRRecords, Rustblade, Slowdown, Soleilmoon, Tzadik, and Vivo. In the 1980s, he released five LPs and dozens of homemade cassettes on his own labels Lowest Music & Arts and ZSF Produkt.

From 2009, reissues and archival releases of previously unreleased material have become a significant part of Merzbow's output. In 2018, the Japanese label Slowdown Records began releasing archival recordings on a semimonthly basis, ultimately releasing 96 archival CDs by the end of 2022.

Merzbow has appeared twice on the Billboard charts charts for one week each time, both for collaborations: Gensho with Boris appeared at number 21 on the Heatseekers Albums chart and at number 24 on the Top Hard Rock Albums chart for the week of April 9, 2016. Cuts Up, Cuts Out with Balázs Pándi, Mats Gustafsson and Thurston Moore appeared at number 21 on the Jazz Albums chart and at number 13 on the Contemporary Jazz Albums chart for the week of May 5, 2018.

Note: Release reissues and compilation tracks taken from albums are not listed. The infobox count includes all aliases.