Elizabeth S. Russell also known as Elizabeth (“Tibby”) Buckley Shull Russell (May 1, 1913 – May 28, 2001) was a scientist in the field of mammalian developmental genetics, spending most of her career at the Jackson Laboratory in Bar Harbor. Elizabeth is most recognised for her ground breaking work in pigmentation, blood-forming cells, and germ cells. Elizabeth also raised awareness for the benefits of genetically-defined laboratory animals in biomedical research.