Florence E. "Flo" Sundstrom (February 9, 1918 – June 25, 2001) was an American actress who had an active career in theatre, television, and film.

[1][2][3] She was educated at Great Neck High School, and studied acting, music, and dance in New York and Galveston, Texas, where she made her stage debut in 1922.

[1][4] She starred as a character actress in numerous plays on Broadway through 1959, including Chester Erskine's The Good (Oct 1938, as Rose Dubrowski[5]), Irwin Shaw's Retreat to Pleasure (1940 -1941, as Lenore Trilling[6]), Charles MacArthur's Johnny on a Spot (1942, as Barbara Webster[5]), Frank Tarloff's They Should Have Stood in Bed (1942, as Vivian Lowe[5]), Milton Lazarus's The Sun Field (1942, as Karyl Dumont[7]), Robert Stolz's Mr. Strauss Goes to Boston (1945, as Pepi[8]), Stanley Richards's Marriage Is for Single People (1945, as Lily Packer[5]), Anita Loos's Happy Birthday (1946-1948, as Bella[9]), Fay Kanin's Goodbye, My Fancy (1948-1949, as Ellen Griswold[10]), Tennessee Williams's The Rose Tattoo (1951, as Bessie[11]), Mary Helen Fay's Faithfully Yours (1951, as Gracie[12]), N. Richard Nash's See the Jaguar (1952, as Mrs. Meeker[13]), and Ketti Frings's Look Homeward, Angel (1957-1959, as Mrs. Marie "Fatty" Pert[14]).

In film Sundstrom appeared in The Rose Tattoo (1955, as Flora,[15] The Vagabond King (1956, as Laughing Margot[16]), Spring Reunion (1957, as Mary[17]), Bachelor in Paradise (1961, as Mrs. Pickering[18]), The Last Challenge (1967, as Outdoors[18]), The World's Greatest Lover (1977, as Aunt Tillie[19]), Stitches (1985, as a maid[20]), and Pacific Heights (1990, as Mrs. Thayer[21]).

[22] Sundstorm married baritone and musical theatre actor and radio personality Ronald Graham on December 20, 1940, who died in 1950, aged 38.