Karla Cameron, from Ballymena, was seriously hurt when two cars collided on the Lisnevenagh Road, between Antrim and Ballymena, on Thursday morning.
The crash was reported to police at 09:50 GMT.  Ms Cameron died on Thursday evening.
The police have appealed for witnesses to contact them.
A 25-year-old woman has died from her injuries after a car crash in County Antrim.