The three plate designs were selected from more than 500 entries submitted by the public.
A panel of Georgia college and university art professors narrowed the selection to eight. An online public vote chose the final three designs.
Gov. Nathan Deal will announce the winner Friday at a state Capitol news conference.
The "In God We Trust" logo featured on the bottom of each plate is an optional sticker, which may be purchased for an additional dollar at county tag offices.
The state will begin issuing the plate next year.