Actress Hedy Lamarr, screen sex symbol of the ’30s and ’40s and unsung wartime inventor, was found dead yesterday at 86.

Her body was discovered in her home near Orlando, Fla. Authorities said her death was not suspicious. It was not clear when she died.

Once billed as the world’s most beautiful woman, she appeared in a string of hit films opposite such dashing leading men as Clark Gable, Spencer Tracy, William Powell, Robert Taylor and Ray Milland.

One of her most successful movies was the 1949 epic “Samson and Delilah,” directed by Cecil B. DeMille with Victor Mature as the longhaired Samson and Lamarr as the seductive Delilah.

But Lamarr might be best known by younger audiences today for a movie she never appeared in, “Blazing Saddles.”

One of the movie’s villains, played by Harvey Korman, is named Hedley Lamarr. But people insist on calling him Hedy, to which he responds, “That’s Hedley!”

A little-known role for Hedy Lamarr was that of real-life inventor. During World War II, she and a friend received a U.S. patent for a radio signaling device that became a key part of the communications industry decades later.

Born Eva Maria Kiesler in Austria, Lamarr first came to international attention with the 1933 Czech film “Ecstasy.”

Playing a newlywed who discovers too late her elderly husband is impotent, she had a sex scene and appeared nude swimming in a sylvan lake and running through the woods.

She made her American debut in “Algiers,” opposite suave Frenchman Charles Boyer, and it made her a box-office star.

Lamarr was reputedly the first choice for the role in 1943’s “Casablanca” that eventually went to Ingrid Bergman.

She did a rare comic turn in the 1951 Bob Hope flick “My Favorite Spy” but her career went downhill in the mid-1950s. Her last movie, “The Female Animal,” was in 1958.