| Title | Year | Status | Character |
|---|
| Crimine contro crimine | 1998 | writer | |
| La strana storia di Olga 'O' | 1995 | story | |
| Il giorno del giudizio | 1994 | | |
| L'uovo del cuculo | 1992 | Short | |
| Top Model 2 | 1990 | | |
| Jiboa | 1989 | writer | |
| Casablanca Express | 1989 | screenplay | |
| Stradivari | 1988 | screenplay / story | |
| Provare per credere | 1987 | TV Movie | |
| Sicilian Connection | 1987 | screenplay / story | |
| Hands of Steel | 1986 | screenplay - uncredited | |
| L'assassino è ancora tra noi | 1986 | screenplay | |
| Caccia al ladro d'autore | 1985 | TV Series writer - 1 episode | |
| Pizza Connection | 1985 | | |
| La fine dell'eternit | 1984 | story "La fine dell'eternit | |
| Once Upon a Time in America | 1984 | uncredited | |
| 2019: After the Fall of New York | 1983 | screenplay - as Julian Berry / story - as Julian Berry | |
| The Scorpion with Two Tails | 1982 | screenplay / story | |
| Notturno con grida | 1981 | | |
| Il ficcanaso | 1980 | story | |
| Mi faccio la barca | 1980 | book "I quaranta belanti" / screenplay | |
| The Great Alligator | 1979 | writer | |
| Concorde Affaire '79 | 1979 | screenplay | |
| Profumo di classe | 1979 | TV Movie | |
| Il cinico, l'infame, il violento | 1977 | | |
| Sahara Cross | 1977 | screenplay | |
| A Genius, Two Friends, and an Idiot | 1975 | screenplay / story | |
| Fango bollente | 1975 | | |
| Kidnap Syndicate | 1975 | screenplay | |
| The Suspicious Death of a Minor | 1975 | screenplay / story | |
| La citt | 1975 | screenplay / story | |
| La pupa del gangster | 1975 | | |
| L'uomo senza memoria | 1974 | screenplay | |
| Almost Human | 1974 | story and screenplay | |
| My Name Is Nobody | 1973 | screenplay / story | |
| Anna, quel particolare piacere | 1973 | writer | |
| Troppo rischio per un uomo solo | 1973 | writer | |
| Milano trema: la polizia vuole giustizia | 1973 | screenplay / story | |
| Torso | 1973 | screenplay | |
| The Grand Duel | 1972 | screenplay | |
| A Reason to Live, a Reason to Die | 1972 | screenplay / story | |
| Death Walks at Midnight | 1972 | | |
| The Case of the Bloody Iris | 1972 | screenplay / story | |
| Your Vice Is a Locked Room and Only I Have the Key | 1972 | screenplay | |
| Prey of Vultures | 1972 | | |
| It Can Be Done Amigo | 1972 | story | |
| Tutti i colori del buio | 1972 | screenplay | |
| La morte cammina con i tacchi alti | 1971 | screenplay / story | |
| La coda dello scorpione | 1971 | screenplay | |
| L'uomo più velenoso del cobra | 1971 | | |
| La lunga spiaggia fredda | 1971 | | |
| Blade of the Ripper | 1971 | screenplay | |
| Light the Fuse... Sartana Is Coming | 1970 | screenplay | |
| Le foto proibite di una signora per bene | 1970 | screenplay / story | |
| Arizona Colt Returns | 1970 | | |
| La banda de los tres crisantemos | 1970 | additional dialogue | |
| La battaglia del deserto | 1969 | screenplay / story | |
| The Price of Power | 1969 | uncredited | |
| Sartana the Gravedigger | 1969 | writer | |
| Così dolce... così perversa | 1969 | screenplay | |
| Taste of Vengeance | 1969 | screenplay - as E. Castaldi | |
| The Battle of El Alamein | 1969 | screenplay / story | |
| Diamonds for Breakfast | 1968 | uncredited | |
| One More to Hell | 1968 | screenplay / story | |
| Vengeance is Mine | 1968 | writer | |
| Cin cin... cianuro | 1968 | writer | |
| Il dolce corpo di Deborah | 1968 | screenplay / story | |
| Day of Anger | 1967 | story | |
| Troppo per vivere... poco per morire | 1967 | | |
| Flashman | 1967 | | |
| 10,000 Dollars for a Massacre | 1967 | screenplay / story | |
| Giorno caldo al Paradiso Show | 1966 | | |
| $1,000 on the Black | 1966 | screenplay / story | |
| Cifrato speciale | 1966 | screenplay / story | |
| Ring Around the World | 1966 | screenplay / story | |
| Arizona Colt | 1966 | | |
| Killer's Carnival | 1966 | | |
| A... come assassino | 1966 | story | |
| The Almost Perfect Crime | 1966 | writer | |
| Operazione Goldman | 1966 | uncredited | |
| Furia a Marrakech | 1966 | | |
| The Murder Clinic | 1966 | as Julian Berry | |
| Killers Are Challenged | 1966 | screenplay - as Julian Berry / story - as Julian Berry | |
| The 10th Victim | 1965 | screenplay collaboration - uncredited | |
| Seven Rebel Gladiators | 1965 | story | |
| Libido | 1965 | | |
| Scandali nudi | 1965 | | |
| Secret Agent Fireball | 1965 | screenplay - as Julian Berry / story - as Julian Berry | |
| Goliath at the Conquest of Damascus | 1965 | uncredited | |
| Buffalo Bill | 1965 | uncredited | |
| The Long Hair of Death | 1964 | story - as Julian Berry | |
| La vendetta di Spartacus | 1964 | uncredited | |
| I giganti di Roma | 1964 | | |
| Il mostro dell'opera | 1964 | screenplay / story | |
| Crypt of the Vampire | 1964 | story and screenplay - as Julian Berry | |
| Hercules and the Masked Rider | 1963 | uncredited | |
| Ursus in the Land of Fire | 1963 | uncredited | |
| La pupa | 1963 | uncredited | |
| The Whip and the Body | 1963 | screenplay and dialogue - as Julian Berry | |
| Horror Castle | 1963 | screenplay and adaptation - as Gastad Green | |
| Divorzio alla siciliana | 1963 | writer | |
| Perseo l'invincibile | 1963 | screenplay | |
| Sodom and Gomorrah | 1962 | uncredited | |
| Alone Against Rome | 1962 | as Gastad Green | |
| Charge of the Black Lancers | 1962 | uncredited | |
| The Horrible Dr. Hichcock | 1962 | story and screenplay - as Julyan Perry | |
| Women of Devil's Island | 1962 | uncredited | |
| Duello nella sila | 1962 | uncredited | |
| Nerone '71 | 1962 | | |
| Mars, God of War | 1962 | story | |
| Avenger of the Seven Seas | 1962 | uncredited | |
| Ultimatum alla vita | 1962 | screenplay | |
| Che femmina!! E... che dollari! | 1961 | | |
| Rocco e le sorelle | 1961 | | |
| Pesci d'oro e bikini d'argento | 1961 | | |
| Queen of the Seas | 1961 | uncredited | |
| Werewolf in a Girls' Dormitory | 1961 | US prints: as Julian Berry | |
| The Mongols | 1961 | uncredited | |
| Akiko | 1961 | screenplay - uncredited | |
| Guns of the Black Witch | 1961 | uncredited | |
| Pirates of the Coast | 1960 | uncredited | |
| Little Girls and High Finance | 1960 | uncredited | |
| The Vampire and the Ballerina | 1960 | | |
$700,000
