Gregory Jein (Captain)
Captain Gregory "Greg" Jein was a Starfleet officer in the 24th century.

Jein was one of the yard engineers at the Utopia Planitia Ship Yards in 2363, whose name later appeared on the 2368 updated dedication plaque for the . (, dedication plaque)

In the 2370s, he was listed as a member of the Tactical Operations team on the dedication plaque of several Federation starships, including the  at Antares Ship Yards in 2370, the  at Earth Station McKinley in 2371, and the  at Utopia Planitia Ship Yards in 2375. (, dedication plaque; , dedication plaque; , dedication plaque)

de: Gregory Jein (Captain)
Individuals
Starfleet captains
Starfleet operations personnel
USS Defiant dedication plaque personnel
USS Enterprise (NCC-1701-D) dedication plaque personnel
USS Sao Paulo dedication plaque personnel
USS Voyager dedication plaque personnel