"Gyo (ギョ?, Fish) is a horror manga by Junji Ito. It also includes a pair of bonus stories, titled The Enigma of Amigara Fault and The Sad Tale of the Principal Post. 
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The plot of Gyo centers around the "death stench", a revolting smell first encountered in connection with creatures appearing to be the corpses of bizarre fish with scuttling, sharp metal legs." - Wikipedia

This is an upload of the entire manga Gyo.
The images are in .jpg format and are organized by Chapter Number.
Chapter titles are not included, if you really want them you can find them here: 
http://en.wikipedia.org/wiki/Gyo#List_of_chapters

If you have any requests, feel free to comment.

Thanks and keep seeding!

Note: This may not include the pair of bonus stories.