Noel Neill as Lois Lane.
She first played the role in the Superman theatrical serials starring Kirk Alyn. She later returned to the role when she replaced Phyllis Coates starting with the second season of the George Reeves television series.
She also had a cameo in the first Superman movie as Lois Lane's mother (which, IIRC, was mostly cut from the final version). Check out the scene where the little girl on the train is watching young Clark pacing the train. The woman sitting next to her is Noel Neill. The little girl was supposed to be a young Lois.