Demon Theory

{{Short description|2006 novel by Stephen Graham Jones}}

{{Use mdy dates|date=March 2025}}

{{Infobox book |

| name = Demon Theory

| title_orig =

| translator =

| image = Demon Theory.jpg

| caption = First Edition Cover

| author = Stephen Graham Jones

| illustrator =

| cover_artist = Jacket design by Dorothy Carico Smith

| country = United States

| language = English

| series =

| genre =

| publisher = MacAdam/Cage

| release_date = April 27, 2006

| english_release_date =

| media_type = Print (hardback & paperback)

| pages = 439 pp (first edition, paperback)

| isbn = 978-1-59692-216-7

| isbn_note = (first edition, paperback)

| oclc= 62878706

| preceded_by = Bleed Into Me

| followed_by = The Long Trial of Nolan Dugatti

}}

Demon Theory is a novel written by Native American author Stephen Graham Jones. Written like a screenplay, it was published in 2006.