Here is a complete list of all Aliens comics ever released. Hope it helps those of you looking to complete collections! Happy hunting!
A few notes up front- this list does not include any of the trade paperback reprints or omnibusses. It is a complete list of every original Aliens comic book ever published. It also does not contain the mini-comics released with the Kenner Toys. Dark Horse also ran Alien Vs. Predator stories in Dark Horse Insider from time to time, which were supposedly reprinted in one shot comic form.
This list has been triple checked for accuracy. I used a HUGE data base of information provided by Dark Horse Comics and doubled checked that info with two major comic retail chains in the US (Lone Star Comics based in Texas and A1 Comics based in California). IF there is anything else hiding out there, it's hiding pretty friggin' well! Ok...here we go.....
First up is-
Alien: The Illustrated Story (released by Heavy Metal/Futura in 1979)
Everything else from this point was released by Dark Horse Comics, either by themselves or in conjunction with another company via a crossover..... Sidenote: despite popular belief Aliens first comic book appearance is issue #1 of the first 6 issue mini-series listed below. Dark Horse Presents #24 is often cited as Aliens first appearance, but it was not published until issue #2 of the first mini-series was already on the racks.
Aliens (7/88-7/89) 6 issue mini-series
Aliens Giveaway (2/89) one shot mini-comic given to retailers with purchase of Dark Horse Insider, also available in Dark Horse Aliens portfolio package
Aliens: Book II (8/89-5/90) 4 issue mini-series
Aliens Vs. Predator (11/89-12/90) 5 issue mini-series
Aliens: Earth War (6/90-10/90) 4 issue mini-series
Aliens: Genocide (11/91-2/92) 4 issue mini-series
Aliens: Hive (2/92-5/92) 4 issue mini-series
Aliens: Cyberantics (3/92) hardcover graphic novel (tie in to Hive mini-series)
Aliens: Tribes (4/92) hardcover graphic novel
Dark Horse Presents: Aliens (4/92) one shot
Aliens: Newt's Tale (6/92-7/92) 2 issue mini-series
Alien 3 (6/92-8/92) 3 issue movie adaptation
Aliens Volume II: UK Edition (7/92-3/94) 21 issue UK reprint series
Alien 3 UK Edition (7/92-9/92) 3 issue movie adaptation
Aliens: Colonial Marines (1/93-7/94) 10 issue maxi-series
Aliens: Rogue (4/93-7/93) 4 issue mini-series
Aliens: Sacrifice (5/93) one shot
Aliens Vs. Predator: Deadliest Of The Species (7/93-8/95) 12 issue maxi-series
Aliens: Labyrinth (9/93-1/94) 4 issue mini-series
Aliens: Salvation (11/93) one shot
Aliens: Music Of The Spears (1/94-4/94) 4 issue mini-series
Aliens: Stronghold (5/94-9/94) 4 issue mini-series
Aliens: Earth Angel (8/94) one shot
Aliens: Berserker (1/95-4/95) 4 issue mini-series
Aliens Vs. Predator: Duel (3/95-4/95) 2 issue mini-series
Aliens: Mondo Pest (4/95) one shot
Aliens Vs. Predator: War (5/95-8/95) 5 issue mini-series
Superman Vs. Aliens (7/95-9/95) 3 issue mini-series
Aliens Vs. Predator: Booty (1/96) one shot
Aliens: Mondo Heat (2/96) one shot
Aliens: Lovesick (12/96) one shot
Aliens: Guide To The Aliens Universe (97) one shot mini-comic
Dark Horse Classics: Aliens Vs. Predator (2/97-7/97) 6 issue mini-series
Batman Vs. Aliens (3/97-4/97) 2 issue mini-series
Aliens: Pig (3/97) one shot
Aliens Special (6/97) one shot
Aliens: Havoc (6/97-7/97) 2 issue mini-series
Aliens: Purge (8/97) one shot
Aliens: Alchemy (9/97-12/97) 3 issue mini-series
Alien Resurrection (10/97-11/97) 2 issue movie adaptation
Aliens: Kidnapped (12/97-2/98) 3 issue mini-series
Aliens: Survival (2/98-4/98) 3 issue mini-series
Aliens: Glass Corridor (6/98) one shot
Aliens: Stalker (6/98) one shot
Aliens Vs. Predator: Eternal (6/98-9/98) 4 issue mini-series
Aliens: Wraith (7/98) one shot
Wild C.A.T.S. Vs. Aliens (7/98) one shot
Aliens: Apocalypse-The Destroying Angels (1/99-5/99) 4 issue mini-series
Aliens Vs. Predator Annual (7/99) one shot
Aliens: Xenogenesis (8/99-11/99) 4 issue mini-series
Aliens Vs. Predator: Xenogenesis (12/99-3/00) 4 issue mini-series
Aliens Vs. Predator Vs. Terminator (4/00-7/00) 4 issue mini-series
Green Lantern Vs. Aliens (9/00-12/00) 4 issue mini-series
Witchblade/Aliens/Darkness/Predator: Mindhunter (12/00-2/01) 3 issue mini-series
Witchblade/Aliens/Darkness/Predator: Overkill (12/00-3/01) 2 issue mini-series
Superman Vs. Aliens II: Godwar (5/02-12/02) 4 issue mini-series
Judge Dredd Vs. Aliens: Incubus (3/03-6/03) 4 issue mini-series
Batman Vs. Aliens II (7/03-9/03) 3 issue mini-series
Alien Vs. Predator: The Thrill Of The Hunt (10/04) one shot
Superman/Batman Vs. Aliens/Predator (1/07-5/07) 2 issue mini-series
Alien Vs. Predator Volume 2: Civilized Beasts (4/08) one shot
Aliens/Predator Free Comicbook Day Flip book (5/09) one shot giveaway promo
Aliens Day 2009 Free Comicbook Day Variant Cover (5/09) one shot variant cover giveaway promo
Aliens (5/09) New 4 issue mini-series
Aliens appearances in other comic book series-
Dark Horse Presents-
#24, #34, #35, #36, #42, #43, 5th Anniversary Special, #56, #101, #102, #117, #121,#140, #146, #147, Dark Horse Presents 1997 Annual
Dark Horse Comics-
#1, #2, #3, #4, #5, #11, #12, #13, #15, #16, #17, #18, #19, #22, #23, #24, #25
A Decade Of Dark Horse (4 issue mini-series)-
#3