What is the name of the Borg queen's first film appearance?

The Borg Queen's first film appearance was in Star Trek: First Contact. The 1996 movie introduced the character, played by Alice Krige, as the individualized voice and apparent focal point of the Borg Collective.

In the film, the Borg travel back to 2063 to prevent humanity's first contact with the Vulcans and thereby alter Earth's future. The crew of the USS Enterprise-E follows them through the temporal vortex, leading to a battle around the Phoenix launch and humanity's first warp flight.

First Contact was also the first time the Borg were given a named hierarchical figure. Earlier stories presented them chiefly as a collective intelligence without a conventional leader. The Queen describes herself in both singular and plural terms, reinforcing the film's idea that she functions as an embodiment or interface for the Collective rather than a normal monarch.

The character later appeared in Star Trek: Voyager, including “Dark Frontier,” “Unimatrix Zero,” and “Endgame.” Those television appearances came after First Contact, so none of the listed films—Generations, Insurrection, or Nemesis—can be the answer.