The name Gina is a girl's name of German, Spanish origin. Gina and is often added to user-created lists like Names by Nickname and discussed in our forums with posts like "A brother or sister for little Jack or Olivia".
From the experts:
Has been used on its own since the 1920s, but still seems like only part of a name. Was very much tied to mid-century Italian sexpot Gina Lollobrigida.