Films:
* 1935: *No More Ladies*
* 1937: *The Man Who Found Himself*
* 1939: *The Women* (credited as Joan Burroughs)
* 1940: *Rebecca*
* 1941: *Suspicion*
* 1942: *The Constant Nymph*
* 1943: *The Woman of the Year*
* 1944: *Jane Eyre*
* 1945: *The Affairs of Susan*
* 1946: *Ivy*
* 1947: *The Emperor Waltz*
* 1948: *Letter from an Unknown Woman*
* 1949: *The Bigamist*
* 1950: *Born to Be Bad*
* 1951: *September Affair*
* 1952: *Something to Live For*
* 1953: *The Captain's Paradise*
* 1954: *The Shell Seekers*
* 1955: *The Trouble with Harry*
* 1956: *The Swan*
* 1958: *The Man Who Understood Women*
* 1959: *The Big Challenge*
* 1960: *Tender Is the Night*
* 1962: *The Witches*
* 1965: The Road to Hong Kong
* 1969: *The Curious Case of Benjamin Button* (TV movie)
* 1972: *The Adventurers*
* 1976: *The Last of Sheila*
* 1980: *The Last Flight of Noah's Ark*
Television:
* 1954: *The Colgate Comedy Hour*
* 1955: *Ford Theatre*
* 1956: *Schlitz Playhouse of Stars*
* 1957: *Climax!**
* 1958: *Playhouse 90*
* 1959: *The DuPont Show with June Allyson*
* 1960: *The Twilight Zone* (Episode: "The Eye of the Beholder")
* 1960: *The Alcoa Premiere*
* 1961: *The DuPont Show of the Week*
* 1962: *The Virginian*
* 1963: *The Eleventh Hour*
* 1964: *The Alfred Hitchcock Hour*
* 1965: *The Rogues*
* 1967: *The Girl from U.N.C.L.E.*
* 1968: *The Name of the Game*
* 1969: *The Virginian*
* 1971: *The Partridge Family*
* 1972: *The Rookies*
* 1973: *The Love Boat*
* 1977: *Fantasy Island*
* 1979: *The Incredible Hulk*
* 1980: *The Love Boat*
This list doesn't include all of her work, but it covers the majority of her most notable roles.
It's worth noting that Joan Fontaine was a highly acclaimed actress, winning an Academy Award for her role in *Rebecca* and receiving nominations for *Suspicion* and *Jane Eyre*. She was known for her elegance, grace, and ability to portray complex and compelling characters.