Dublin Nightmare is a 1958 British second feature ('B')[1] thriller film directed by John Pomeroy and starring William Sylvester, Marla Landi and Richard Leech.

[2][3] The screenplay was by John Tully based on the 1951 novel of the same title by Robin Estridge (as Philip Loraine).

Irish nationalists plan to seize a security van to raise money for their movement.

The Monthly Film Bulletin wrote: "The Dublin locations are the principle point of interest in this unconvincing, weakly acted and sluggish second feature, which despite its brevity, barely escapes dullness; a less cautious treatment of the material available in the backgrounds of the city at night might have made a more exciting film.

"[5] Britmovie described it as a "compact b-movie based on the novel by Robin Estridge and effectively directed by John Pomeroy that transposes a Third Man style plot to 1950s Ireland.