Metal Gear Solid: Snake Eater 3D is a stealth action game for the Nintendo 3DS. It is a re-release of Metal Gear Solid 3: Snake Eater. The game was released on February 21, 2012 in North America and on March 8, 2012 in Japan and Europe. It is also the first Metal Gear game released on a Nintendo-developed portable system since Metal Gear: Ghost Babel back in 2000. A digital download version was released in Japan via the Nintendo eShop function on the Nintendo 3DS on December 16, 2014, exactly a decade after the initial release of the original title.

The download includes a Snake Eater theme, which includes a FOX logo wallpaper, the theme song for the game, cursor sound effects from the Metal Gear series, and folders modelled after the cardboard boxes from the series. The digital download for the game itself and the 3DS theme were later released in Europe and North America on December 18, with the game costing $19.99.

A patch was released a day later to fix a glitch in the WIG area that caused the game to freeze and corrupt save data when using the Circle Pad Pro.