James Patrick Blackden Marriott (6 September 1972 – 28 July 2012) was an English film critic and writer of fiction and non-fiction.
Marriott was educated at Rokeby Preparatory School and Wellington College, Berkshire.
His main interest was horror film, although his work included short stories and true crime fiction.
His book, Horror: the Definitive Guide to the Cinema of Fear (published by André Deutsch, 2006; ISBN 978-0-233-00201-9), and co-written with Kim Newman, was described by the London Review of Books, as "an extremely engaging and intelligent guide to horror film… informative, opinionated and down-right interesting to read."
As a proof-reader and editor, he worked with Random House, Simon & Schuster and Virgin Books.