Precambrian is the third studio album by German post-metal band the Ocean, released on 5 November 2007 through Metal Blade Records.

It features several guest musicians, including Caleb Scofield (Cave In, Zozobra, Old Man Gloom), Nate Newton (Converge, Doomriders), Dwid Hellion (Integrity), Tomas Hallbom (Breach), Erik Kalsbeek (Textures) and musicians from the Berlin Philharmonic Orchestra.

The main concept of the album is based around the Precambrian, an early period in the formation of Earth.

Additional vocals were recorded in Sweden, Belgium, the Netherlands, and Los Angeles, California and Seattle, Washington in the United States.

The album's mastering was originally done by Nick Zampiello, but dissatisfied Robin Staps, and it was therefore remastered in Finland.