Mary McDonnell (b. 1959) is an American actress and performing artist, widely recognized for her work in film, television, and theater. Born in Wilkes-Barre, Pennsylvania, McDonnell began her career on the stage, studying at the American Conservatory Theater in San Francisco, where she developed a strong foundation in classical and contemporary performance.

McDonnell gained critical acclaim for her nuanced portrayals of complex characters, earning Academy Award nominations for her supporting roles in Dances with Wolves (1990) and Passion Fish (1992). She is also well known for her work in television, including her role as President Laura Roslin in Battlestar Galactica and as Sharon Raydor in Major Crimes.

Her acting style is characterized by emotional depth, subtlety, and a strong presence that draws viewers into the narrative. Beyond acting, McDonnell has occasionally engaged in directing and advocacy for the arts, supporting initiatives that foster theater and film education. Over her career, she has become celebrated for her ability to balance vulnerability and strength in her characters, making her a respected figure in contemporary American performing arts.