Enterprise (alternates)

Throughout the history of the universe, there have been multiple timelines, alternate realities and parallel universes that have contained versions of the USS Enterprise (NCC-1701), as well as various duplicates.

Duplicates
In the 2260s, the Gideonites expended resources to fool Captain James T. Kirk with a ground-based replica of his ship, the USS Enterprise (Gideon). 

Alternate realities
In a timeline where the Romulans conquered the Federation in the 2260s decade and enslaved Humanity, the USS Enterprise was held as a trophy aboard the Romulan fleet station when and his crew beamed up from Earth in the 2360s. 

In a reality where the was not lost, the  had destroyed the USS Enterprise.