What religion is James Holmes?

Answer 1

His family attended a Lutheran church at least sometimes with Holmes back before he went into college, according to a Huffington Post article, but the article says nothing about Holmes' own beliefs.

Match.com has confirmed that Holmes had an account on the dating site, in which he posted "agnostic" as his religion.

Therefore the correct answer is almost certainly "agnostic", according to Holmes himself.

Answer 2

There is no public information confirming James Holmes' religious affiliation. Holmes is known for committing a mass shooting in a movie theater in Aurora, Colorado, in 2012, but his religious beliefs have not been disclosed.