Is there such a thing as a false religion?

Of course, to me they're all false.

Scientology !

From Google :

1. A religious system based on the seeking of self-knowledge and spiritual fulfillment through graded courses of study and training. It was founded by American science fiction writer L. Ron Hubbard (1911–86) in 1955.

Religion is history's most successful service industry. It offers hope of "life everlasting" where believers may walk side-by-side with their Creator, be reunited with their loved ones in Paradise, and live happily ever after. It is also history's most successful Ponzi scheme: Ante-up now; collect on the other side.

Within that framework most religions may be considered true, but some are aberrations or bare-faced scams. Scientology is perhaps the most blatant.

So what makes a religion true? It delivers value for the tithes and lifestyle commitment of its adherents.

Mainstream Christianity, Buddhism, Hinduism, Islam,  and so on, can be considered true. Whether they preach an ultimate truth doesn't really matter. They are delivering things of value to their followers.

If I wanted to follow a religion I would choose one of the Nature religions.  Those are more natural, more spiritual, and far less hidebound than their bureaucratic brethren (and sisteren).

Definetly Yes,the Bible helps us to recognize true worshiper. They respect the Bible as God's word.  They strive to live by it's principles. So true religion differs from  religion that is based on men's ideas. Matthew 15:7-9."It is in vain that they keep worshipping me,for they teach commands of men as doctrines." True worshippers do not preach one thing and practice another. Titus 1:16

If false means delusional, yes.

It depends who you ask, if you ask me all of them are false, except mine.