The Wilhelm Scream

"The Wilhelm scream is a stock sound effect first used in 1951 for the movie Distant Drums. It has been featured in dozens of movies since. Alongside a certain recording of the cry of the Red-tailed Hawk, the "Universal telephone ring" [1] and "castle thunder," it is probably one of the most well-known cinematic sound clichés."
-Wikipedia

Wilhelm Scream-Wikipedia