// SPACE.COM — SPAZIO & SCIENZA
Best space and sci-fi themed Halloween costumes for 2026
Stuck for an outfit this spooky season? We've looked to the stars to bring you the best space-themed Halloween costumes, from Alien to Star Trek and more.
When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.
Are you stuck for an outfit this spooky season? We've got you covered with our round-up of the best space themed Halloween costumes. Let's face it, even if there aren't any haunted spaceships out there, the vastness of the void is enough to give us the chills.
From Aliens to Star Wars, these costumes are sure to make you stand out, get the conversation flowing and maybe even raise a chuckle or two. And if you're a regular convention-goer, many of these costumes can double as cosplay outfits.
If you're still struggling for inspiration, or want to put your own costume together from scratch, you can always check out the best lightsabers, best streaming services or the best Lego Star Wars and Lego Marvel sets for ideas.
Surprise and shock friends and family with this Alien costume, which makes you an unfortunate member of the ill-fated Nostromo crew, complete with a 3D chestburster Alien tearing its way out of your torso. The gruesome t-shirt alone is enough to turn heads.
Who doesn't love pretending they're in Star Wars? With this Jedi outfit, you can do just that this Halloween. Pair it with a lightsaber and people may have to do a double-take.
I used to love watching Star Trek with my Grandad on a Saturday afternoon and finding this shirt brings back memories. For fans of the Original Series, this is a must-have for Halloween.
This is a little obvious, I know, but I still think it's a great outfit for women to wear on Halloween. Plus, who can argue that Princess Leia isn't cool? Why not celebrate a strong woman this Halloween and become her for the day?
Blast off with this super-silly costume which, with the aid of a pair of inflatable false legs, gives the impression you're heading to the stars.