Shop By

Active Filters:

Reset Filters

Sci-Fi

Sci-Fi Costumes for an Out-of-This-World Halloween

(422 items)

Sort by

1 3/4" Ghostbusters™ Slimer Glow-in-the-Dark Enamel Pin

1 Piece(s) #MASFSP112

$11^.99

Quick View

4th Doctor Who Necktie

1 Piece(s) #EL444382

Sale

$6^.98

72% OFF

Quick View

The Twilight Zone™ Mystic Seer Full-Color Enamel Pin

1 Piece(s) #MASFCBS103

$11^.99

Quick View

3" Bulk 72 Pc. Creepy Solid Color Vinyl Martian Fingers with Red Nails

72 Piece(s) #39/431

Sale

$4^.98

50% OFF

(26)

Quick View

Toddlers Star Wars Stormtrooper Deluxe Costume

Each #JWC0685

Sale

$14^.98

55% OFF

Quick View

Boy's Classic Muscle Chest Mighty Morphin Power Rangers™ Red Ranger Dino Costume

1 Piece(s) #14289538

Starting at

$25^.48

Select Options

Kids Star Wars™ Stormtrooper™ Half Mask

1 Piece(s) #JWC1194

$9^.99

Quick View

Halo™ Plasma Rifle

1 Piece(s) #DG67094

$21^.08

Quick View

Men's Star Wars™ Boba Fett Mask

1 Piece(s) #RU32846

Sale

$65^.88

40% OFF

Quick View

Pointed Latex Ears

1 Piece(s) #FA30FL

$4^.99

Quick View

Ghostbusters™ Ghost Trap

1 Piece(s) #DG120299

Sale

$13^.78

8% OFF

(2)

Quick View

Avatar Neytiri Deluxe Wig

1 Piece(s) #DG129289

Sale

$18^.98

58% OFF

Quick View

John Carpenter’s They Live Stay Asleep Glasses Enamel Pin

1 Piece(s) #MASFUS112

Sale

$7^.98

33% OFF

Quick View

Kids Star Trek™ Commander Spock Costume

2 Piece(s) #14601666

Starting at

$20^.98

Select Options

Women's Deluxe Stranger Things™ Max Costume

1 Piece(s) #14469672

Starting at

$25^.98

Select Options

Boy's Classic Muscle Mighty Morphin Power Rangers™ Red Ranger Costume

1 Piece(s) #14289413

Starting at

$19^.98

Select Options

Adults Deluxe Stranger Things™ Season 4 Vecna Costume

1 Piece(s) #14469667

Starting at

$55^.77

Select Options

Men’s Star Trek: Beyond™ Spock Costume

1 Piece(s) #13792103

Starting at

$35^.97

Select Options

Adults Deluxe Stranger Things™ Demogorgon Costume

1 Piece(s) #14469674

Starting at

$34^.98

Select Options

Adults Primalux Light-Up Star Wars™ A New Hope™ Darth Vader Costume with Sound

1 Piece(s) #14601651

Starting at

$1,349^.99

Select Options

3" Bulk 72 Pc. Glow-in-the-Dark Vinyl Martian Finger Costume Accessories

72 Piece(s) #39/434

Sale

$5^.38

43% OFF

(20)

Quick View

Kids Star Wars Princess Leia Wig

1 Piece(s) #JWC3027

$19^.88

Quick View

Adults Master Chief Boot Covers

1 Piece(s) #DG89999AD

$27^.99

Quick View

Baby Astronaut Bunting Costume

2 Piece(s) #UR27566

Sale

$13^.98

50% OFF

Quick View

Adult Star Wars Rey Wig

1 Piece(s) #RU34458

Clearance

Price

$8^.27

59% OFF

Quick View

Pointed Latex Ears Alien Blue

1 Piece(s) #FA30BU

Clearance

Price

$1^.37

45% OFF

Quick View

Adults Alien Spawn™ Grey Full Mask with Black Hood - One Size

1 Piece(s) #FW93577GY

Sale

$5^.98

54% OFF

Quick View

Doctor Who Tardis Laplander Hat

1 Piece(s) #EL291500

Sale

$16^.98

32% OFF

Quick View

1 3/4" Ghostbusters™ No Ghost Symbol Glow-in-the-Dark Full-Color Enamel Pin

1 Piece(s) #MASFSP110

$11^.99

Quick View

Adults Star Trek™ Spock Long Sleeve Costume Top

1 Piece(s) #14601670

Starting at

$45^.48

Select Options

Kids Astronaut Costume

1 Piece(s) #14298406

Starting at

$17^.47

Select Options

Star Wars The Mandalorian Wheelchair Costume Accessory

Each #JWC1516

Sale

$29^.98

54% OFF

Quick View

Doctor Who Tardis Scarf

1 Piece(s) #EL444332

Clearance

Price

$20^.97

40% OFF

(2)

Quick View

Adults Peter Jackson’s King Kong™ King Kong Mask

1 Piece(s) #MAZSUS100

Sale

$89^.98

40% OFF

Quick View

Adults Star Wars™ The Mandalorian™ Half Mask

1 Piece(s) #JWC1180

Sale

$10^.18

40% OFF

Quick View

Kids Classic Power Rangers™ Cosmic Fury Blue Ranger Muscle Costume - Large 10-12

1 Piece(s) #DG167249G

Sale

$37^.48

25% OFF

Quick View

Kids Qualux Star Wars: Kenobi™ Purge Trooper Jumpsuit Costume

1 Piece(s) #14506508

Starting at

$42^.99

Select Options

Kids Silver Astronaut Halloween Costume

1 Piece(s) #14305078

Starting at

$21^.48

Select Options

Kids Classic Muscle Transformers One™ Bumblebee/B-127 Costume

1 Piece(s) #14469679

Starting at

$44^.99

Select Options

Boy's Classic Muscle Chest Mighty Morphin Power Rangers™ Gold Ranger Dino Costume - Medium

1 Piece(s) #DG82789K

$35^.79

Quick View

Star Wars™ The Mandalorian™ Grogu™ Shoulder Sitter

1 Piece(s) #JWC1182

Sale

$20^.98

30% OFF

Quick View

Star Wars™ The Mandalorian The Child™ Ears Headband

1 Piece(s) #14094092

$7^.79

(3)

Quick View

Kids Deluxe Ghostbusters: Frozen Empire™ Flight Suit Costume

1 Piece(s) #14469605

Starting at

$21^.98

Select Options

Boy's Classic Toy Story 4 Buzz Lightyear Costume

1 Piece(s) #14263794

Starting at

$22^.18

Select Options

Kids Halo™ Chrome Energy Sword Costume Accessory

1 Piece(s) #DG171709

$24^.99

Quick View

Kids Classic Power Rangers™ Cosmic Fury Blue Ranger Muscle Costume

1 Piece(s) #14469646

Starting at

$21^.58

Select Options

Boy's Classic Mighty Morphin Power Rangers™ Red Ranger Dino Costume

1 Piece(s) #14289438

Starting at

$19^.78

Select Options

Halo™ Energy Sword

1 Piece(s) #DG48490

Sale

$21^.48

28% OFF

(4)

Quick View

Adults Star Wars™ The Mandalorian™ Ahsoka Costume

7 Piece(s) #14242013

Starting at

$34^.18

(2)

Select Options

Adults Deluxe Stranger Things Argyle S4 Costume

2 Piece(s) #14359555

Starting at

$41^.97

Select Options

Kids Godzilla x Kong: The New Empire™ Godzilla Costume

Each #14523059

Starting at

$35^.68

Select Options

Men's Supreme Star Wars™ Stormtrooper Full-Body Costume - Extra Large

1 Piece(s) #RU909866XL

$1,874^.99

Quick View

Adults Deluxe Stranger Things™ Steve Scoops Ahoy Costume

1 Piece(s) #14469665

Starting at

$79^.99

Select Options

Kids Classic Stranger Things S4 Eddie Costume

1 Piece(s) #14359567

Starting at

$26^.97

Select Options

Baby Star Wars™ Ewok™ Costume

3 Piece(s) #14242024

Starting at

$33^.98

Select Options

Adults Star Wars™ Princess Leia™ Hooded Costume

3 Piece(s) #14242014

Starting at

$64^.99

Select Options

Kids Deluxe Dilophosaurus Costume

2 Piece(s) #14359672

Starting at

$29^.98

Select Options

Men's Deluxe Star Trek™ Captain Kirk Costume

1 Piece(s) #13792379

Starting at

$39^.97

Select Options

Boy's Blue Power Ranger Beast Morphers Muscle Costume

1 Piece(s) #14107894

Starting at

$25^.77

Select Options

Kids Classic Jurassic World Rebirth™ T-Rex Hooded Jumpsuit Costume

1 Piece(s) #14585485

Starting at

$30^.08

Select Options

Kids Muscle Power Rangers Beast Morphers™ Blue Ranger Jumpsuit Costume

2 Piece(s) #14108905

Starting at

$26^.97

Select Options

Women’s Star Trek: Discovery™ Gold Command Uniform Costume

1 Piece(s) #13827111

Starting at

$114^.98

Select Options

Adults Qualux Star Wars: A New Hope™ Luke Skywalker Costume

5 Piece(s) #14601701

Starting at

$59^.99

Select Options

Kids Qualux Star Wars™ Darth Vader™ Costume

3 Piece(s) #14242002

Starting at

$54^.99

Select Options

1 2 3 4 5 ... 7

Find Your Perfect Sci-Fi Character Look

Transform into your favorite intergalactic hero or villain with our expansive selection of sci-fi costumes. From the far reaches of space to iconic movie franchises, we have everything you need to create a show-stopping ensemble for Halloween 2025. Our collection features officially licensed outfits from top studios, ensuring authentic and detailed character looks. Whether you're joining a crew of Ghostbusters or commanding the galaxy as a Jedi, our movie character costumes provide an unforgettable experience. Explore options for kids, teens, and adults to find the perfect fit for your entire family's cosmic adventure. With a vast range of sizes and styles, achieving your dream cosplay sci-fi outfit has never been easier or more fun.