Elizabeth Weir is a fictional character from the science fiction television series Stargate Atlantis. She serves as the leader of the Atlantis expedition, overseeing the exploration of the ancient city and its surrounding galaxy. Weir is known for her diplomatic skills and ability to manage complex relationships with various alien species. In addition to her leadership role, Elizabeth Weir is a trained diplomat and psychologist. Her character is portrayed by actress Torri Higginson. Throughout the series, she faces numerous challenges, including political conflicts and threats from hostile forces, while striving to protect her team and the city of Atlantis.