Do Scientologists Believe In Buddha?

I'm not sure what you mean. I'm sure Scientologists acknowledge that Siddhartha Gautama, aka "The Buddha", was a real person. But Buddha's life and teachings in and of themselves are essentially irrelevant to Scientology, and just about all religions outside of Buddhism for that matter. So it's sort of like asking what the New York Yankees think of a Brazilian football team.

I don't think so, but the Buddha isn't god, he was a philosopher. There's a difference.

No, they don't believe in a doggone Buddha!

no, buddhism is a separate religion.

I doubt it.