Spring Dell Byington (October 17, 1886 – September 7, 1971) was an American actress. Her career included a seven-year run on radio and television as the star of December Bride. She was a former MGM contract player who appeared in films from the 1930s to the 1960s. Byington received an Academy Award for Best Supporting Actress nomination for her role as Penelope Sycamore in You Can't Take It with You (1938).