What do you call a person addicted to reading?

Answer 1

Bibliophilia is the love of books. Accordingly a bibliophile loves books, but especially "for qualities of format". A bookworm loves books for their content, or otherwise loves reading in general. Bibliophilia is generally considered to be incorrect, but some would say it is a new, recent, usage. The practice of loving or collecting books is dubbed bibliophilism, and the adjective form of the term is bibliophilic. Also, a bibliophile may be a book collector.

Answer 2

Well, honey, you call them a bookworm. They can't get enough of those juicy pages and probably have a library card that's more worn out than their favorite novel. Just don't interrupt their reading time unless you want to see some serious side-eye.