This page details Elizabeth Dehner in the alternate reality created by Nero's temporal incursion; for the Elizabeth Dehner in the primary universe see Elizabeth Dehner; for the Elizabeth Dehner in the mirror universe see Elizabeth Dehner (mirror); for the Elizabeth Dehner in all other alternate universes see Elizabeth Dehner (alternates).

Doctor Elizabeth Dehner was a Human psychologist in the 23rd century of an alternate reality.

At some point Dehner had a relationship with Leonard McCoy which ended badly. In 2258, Dehner transferred aboard the USS Enterprise at Aldeberan, but withdrew her transfer and left the ship because she had not forgiven McCoy. (TOS comic: "IDW Star Trek, Issue 1")

Dehner's prior relationship with McCoy explains her absence from the alternate reality equivalent of the events depicted in TOS episode: "Where No Man Has Gone Before".