Yes, the most famous of these is Fahrenheit 451. This was adapted in 1966 by the famous French director Francois Truffaut, and for many viewers the film became as much of a classic as the book, though not all critics were impressed. One problem was the dialogue, which sounded a little unnatural; probably because Truffaut wrote some of it himself, and he didn't speak much English. However, the film certainly conveys the books ideas about illiteracy in the modern world, and the effect of technology on culture. It's rather more optimistic than the book, but Bradbury himself was pleased with it.

Another Bradbury adapation was a 1960s TV miniseries based on The Martian Chronicles. Like other adaptations of his books, it followed the original stories quite closely.

It is hoped that a film version of his novel Dandelion Wine will come out soon too. He was planning an adaptation of this shortly before his death, with director Mike Medavoy.