Playing Happy Families (1994): Una Famiglia Felice – Il Giallo Mondadori N.2508 del 1997 A Sort of Virtue: A Political Crime Novel (1996)

Short crime fiction

Murder! Murder! (1961) Francis Quarles Investigates (1965)

How to Trap a Crook (1977)

Great Detectives - Seven Original Investigations (1981):

I grandi detectives: sette racconti originali; illustrato da Tom Adams, De Agostini, 1981

The Tigers of Subtopia (1982)

Did Sherlock Holmes Meet Hercule (1988); storia singola pubblicata in una limitata edizione con tiratura di solo 200 copie)

The Man Who Hated Television (1995)

A Julian Symons Sherlockian Duet (2000; 2 stories in a pamphlet)

The Detections of Francis Quarles (2006)

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Biografie, Storia e Critica Letteraria

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A J A Symons: His Life & Speculations (1950) biography

Charles Dickens (1951)

Thomas Carlyle. The life and ideas of a prophet (1952?) biography

Criminal Acts (1955)

Horatio Bottomley (1955) biography

The General Strike - A Historical Portrait (1959)

A Reasonable Doubt (1960) non-fiction

The Thirties: a Dream Revolved (1960) revised 1975

Buller’s Campaign (1963) military history

England's Pride: The Story of the Gordon Relief Expedition (1965) military history

Crime and Detection: An Illustrated History from 1840 (1966)

Critical Occasions (1966) essays

Between the Wars (1972) history

Notes From Another Country (1972) stories

Bloody Murder - From the Detective Story to the Crime Novel: A History (1972) (US title: Mortal Consequences) (Special Edgar Award, 1973)

A Reflection on Auden (1973) broadsheet poem

The Angry 30s (1976) history

The Tell-Tale Heart: The Life and Works of Edgar Allan Poe (1978)

Conan Doyle - Portrait of an Artist (1979)

Agatha Christie - the Art of Her Crimes (1981)

Critical Observations: Diverse Essays (1981)

Crime and Detection Quiz (1983)

1948 and 1984. The Second Orwell Memorial Lecture (1984)

Dashiel Hammett (1985)

Two Brothers. Fragments of a Correspondence (1985)

Makers of the New: The Revolution in Literature, 1912-1939 (1987)

Oscar Wilde: A problem in Biography (1988) Lurcy Lecture, Amherst College

Somebody Else (1990) stories

The Thirties and The Nineties (1990)

Portraits of The Missing: Imaginary Biographies (1991)

Does Literature Exist? (1992) Lurcy Lecture, Amherst College

Criminal Practices -Symons on Crime Writing 60s to 90s (1994)