"Scientology, how about that? You hold on to the tin cans and then this guy asks you a bunch of questions, and if you pay enough money you get to join the master race. How's that for a religion?"
Frank Zappa, to a concert audience at the Rockpile, Toronto, May 1969

"My best advice to anyone who wants to raise a happy, mentally healthy child is: Keep him or her as far away from a church as you can."
Frank Zappa

"Children are nave they trust everyone. School is bad enough, but, if you put a child anywhere in the vicinity of a church, you're asking for trouble."
Frank Zappa

"The essence of Christianity is told to us in the Garden of Eden history. The fruit that was forbidden was on the Tree of Knowledge. The subtext is, All the suffering you have is because you wanted to find out what was going on. You could be in the Garden of Eden if you had just kept your beep mouth shut and hadn't asked any questions."
Frank Zappa, interview, Playboy, May 2, 1993

"Well, I believe that those energies and processes exist. I just don't think that they've been adequately described or adequately named yet, because people are too willing to make it all into something that supports a religious theory of one flavor or another. If you start defining these things in nuts-and-bolts scientific terms, people reject it because it's not fun, y'know. It takes some of the romance out of being dead because of people's desires to have eternal life and to extend their influence from beyond the grave all that Houdini type stuff but basically, I think when you're dead you're dead. It comes with the territory."
Frank Zappa, Society Pages No. 7, January 12, 1991, quoted from The Way I See It, Barry

Zappa was often characterized as an atheist. On Dweezil's birth certificate, for father's religion Zappa put "musician".

he was raised catholic, but grew out of it. He had a serious disdain for organized religion and mocked those who were repressed by it or exploited it

Amen brutha!!
I see stupid people; theyre everywhere. They dont even know theyre stupid!

This message has been deleted.

I've never found anything definitive, exept as the other poster pointed out he was very much against the hipocrisy of evaneglicals at the time. On the other hand, so am I, and I am religious. Maybe he beleived in something, maybe not. Probably had his own idea. He seemd to on nearly everything else.
There's bad brown acid going around. You can take it with a grain of salt!

Jimmy Swaggert, John Lofton, Pat Robertson, and Billy Graham all walk the earth, while FZ collects maggots in the grave. There is no God.
"I've been living on toxic waste for years, and I'm
fine.
Just ask my other heads!"

Frank seemed to think all religion was pretty silly, and he especially liked to point out the hipocrisy of people like Jimmy Swaggart. Check out the lyrics to "Dumb All Over". That pretty much says it all.
"If we're Dumb, then God is Dumb.and maybe even a little Ugly on the Side!"
-FZ
Bring back Arrested Development