
Sonia Dresdel (5 May 1909 - 18 January 1976) was an English actress, whose career ran between the 1940s and 1970s.
She was born Lois Obee in Hornsea, East Riding of Yorkshire, England and was educated at Aberdeen High School for Girls.
Her leading role in the 1947 film While I Live gained her a great deal of acclaim. In the film she plays Julia Trevelyan, a spinster living in a lonely cliff top house in Cornwall and haunted by the death of her sister 25 years earlier.
Her most noted role was that of "Mrs. Baines" in the 1948 film version of Graham Greene's The Fallen Idol, which starred Ralph Richardson and Michèle Morgan.
The film received Academy Awards nominations for Best Director (Sir Carol Reed) and Best Screenplay.
She died of undisclosed causes, aged 66.

The Fallen Idol
1948 · as Mrs. Baines

The Trials of Oscar Wilde
1960 · as Lady Wilde

Lady Caroline Lamb
1972 · as Lady Pont

Now and Forever
1956 · as Miss Fox

The Clouded Yellow
1950 · as Jess Fenton

The Break
1963 · as Sarah

This Was a Woman
1948 · as Sylvia Russell

While I Live
1947 · as Julia Trevelyan

Marie Stopes: Sexual Revolutionary
1970 · as Professor Louise Mellroy

The Third Visitor
1951 · as Steffy Millington

The Adventures of Alice
1960 · as Red Queen

The World Owes Me a Living
1945 · as Eve Heathley