Lois Nettleton (August 16, 1927 - January 18, 2008) was an American actress who portrayed Mrs. Enright on Seinfeld; she made her only appearance in "The Gymnast". Nettleton appeared in a number of television programs and films such as Twilight Zone, The Alfred Hitchcock Hour, Murder, She Wrote, General Hospital and many more. Lois died on January 18, 2008 from lung cancer; she was 80 years old.