O-Octopus

P= Pit and the Pendulum

Q- Queen of the Damned

R-Return of the living dead

S= Suspira

T-Tales from the Darkside:The Movie

U= Unspeakable

V-(The) Vault

W = War of the Worlds

X- X-Men(i know its not horror but I got nothing)

Y = Yellow Sign, The

Z = Zodiac Killer, The

A-Attack of the Giant Leeches

B-Buried Alive

C-Cat People

D-Deadly Blessing

E-Evil Ed

F-Fear

G-Godzilla

H-House...Ding Dong, You're Dead

I-Insaniac

J = Jar, The

K-Kat

L-Land of Doom

M= Metropolis

N-Night of the Day of the Dawn of the Son of the Bride of the Return of the Terror

O-Omen

P-pet semetary

Q-Q

red dragon

S-Susperia

Theater of blood

U-Urban Legend

valentine

Witchboard

X-X The Unknown

Y-Yellow Faced Tiger (not horror but a crappy 70's kung-fu movie)

Zoltan, The Hound of Dracula

A-Army of Darkness

Back Woods