Effie Shannon (May 13, 1867 – July 24, 1954) was an American stage and silent screen actress.

Shannon had a 60-year career as starring performer and later character actress.

She began as a child actor appearing with John McCullough and later in 1886 with Robert B. Mantell.

She was one of the founding members of the Twelfth Night Club for female actresses in 1891 (along with Alice Fisher, Lelena Fisher and Maida Craigen).

[6][7] On September 16, 1932 Peg Entwhistle, wearing a dress borrowed from Shannon, jumped to her death from the top of the Hollywoodland sign.