1955 in comics

February

 * Tales from the Crypt, with issue #46, canceled by EC Comics.

May

 * Western Tales of Black Rider, with issue #28, takes over the numbering of Black Rider — Atlas Comics
 * Third-last issue of Teen-Age Romances published, series cancelled shortly after

July

 * Crime Does Not Pay (1942 series) #147 cancelled by Lev Gleason Publications.
 * Red Ryder Comics, with issue #144, canceled by Dell Comics.

December

 * Gunsmoke Western, with issue #32, takes over the numbering of Western Tales of Black Rider — Atlas Comics

Marvel Comics

 * The Adventures of Pinky Lee
 * Billy Buckskin Western
 * The Black Knight
 * Della Vision
 * Homer the Happy Ghost
 * Marines in Action
 * Meet Miss Bliss
 * My Girl Pearl
 * Navy Combat
 * Rawhide Kid
 * Strange Tales of the Unusual
 * Wyatt Earp

Other publishers

 * The Brave and the Bold (DC Comics, Aug./Sept.)
 * Black Fury (Charlton Comics, May)
 * Little Lotta (Harvey Comics, Nov.)
 * Psychoanalysis (EC Comics, Mar.)
 * Ribon (Shueisha, Aug.)

Renamed titles

 * Cowboy Action #5 renamed from Western Thrillers
 * Gunsmoke Western #32 renamed from Western Tales of Black Rider - Marvel Comics
 * Jann of the Jungle #8 renamed from Jungle Tales - Marvel Comics
 * Patty Powers #4 renamed from Della Vision - Marvel Comics
 * Police Badge issue 749 #5 renamed from Spy Thrillers - Marvel Comics
 * Strange Stories of Suspense #5 renamed from Rugged Action - Marvel Comics
 * Western Tales of Black Rider #28 renamed from Black Rider - Atlas Comics

Atlas Comics

 * Black Knight (Sir Percy), in Black Knight #1 (May)
 * Homer the Happy Ghost, in Homer, The Happy Ghost #1 (Mar.)
 * Morgan le Fay, in Black Knight #1 (May)
 * Mordred, in Black Knight #1 (May)
 * Rawhide Kid, in Rawhide Kid #1 (Mar.)

DC Comics

 * Ace the Bat-Hound, in Batman #92 (July)
 * Krypto, in Adventure Comics #210 (March)
 * Martian Manhunter, in Detective Comics #225 (Nov.)
 * Silent Knight, in The Brave and the Bold #1 (Aug.)
 * Viking Prince, in The Brave and the Bold #1 (Aug.)

Other publishers

 * Kid Marvelman, in Marvelman #102 (L. Miller & Son, July)