Margaret Ruth Kidder (October 17, 1948 – May 13, 2018), known professionally as Margot Kidder, was a Canadian-American actress whose career spanned five decades. Her accolades include three Canadian Screen Awards and one Daytime Emmy Award. Though she appeared in an array of film and television roles, Kidder is best known for her performance as Lois Lane in the Superman film series, appearing in all four original films. Wikipedia