Dennis Nedry Costume
Ah, ah, ah! You didn't say the magic word!
Dennis Nedry is the chaotic, computer-programming antagonist of the original 1993 Jurassic Park film. His memorable look is instantly recognizable to movie fans, combining casual 90s office wear with a bright yellow rain poncho. Dressing as Nedry is a fun, nostalgic choice that lets you carry some of the film's most famous prop replicas.
- Difficulty
- Easy
- Time
- ~20 min
- Budget
- $35–85
Try it on
See yourself as Dennis Nedry
One clear photo of yourself; we render you in this costume — face untouched, full body, about 20 seconds.
One render, $1. No account needed — if it fails you're not charged. Pricing.
Your photo is sent to Google's Gemini API to make the render and isn't used for training. Renders are AI-generated and labelled.
Want a different costume on this photo, or a whole group in costume? Open the Try-On Studio.
What you need for a Dennis Nedry costume
Short on time? Buy it ready-made
Spirit Halloween sells the complete Dennis Nedry costume — one box instead of 6 pieces.
Yellow Raincoat
A bright yellow, hooded raincoat or poncho with a black Jurassic Park logo printed on the left chest.
DIY: Buy a plain yellow raincoat and use a printable iron-on transfer for the Jurassic Park logo.
Blue Polo Shirt
A standard light blue or slate blue short-sleeve polo shirt worn underneath.
Khaki Pants
Classic pleated khaki trousers or chinos in a tan or beige color.
Clear Aviator Glasses
Thin, black-framed or gold-framed aviator glasses with clear lenses.
DIY: Pop the lenses out of a cheap pair of black aviator sunglasses.
Barbasol Shaving Cream Can
A vintage-style Barbasol shaving cream can, which serves as the hidden embryo containment unit.
DIY: Print a vintage Barbasol label and wrap it around a standard aluminum can.
Jurassic Park ID Badge
A laminated clip-on security badge featuring Dennis Nedry's photo, name, and 'Chief Programmer' title.
DIY: Print a Nedry badge template from online, laminate it, and attach it to a metal badge clip.
Rather not assemble it? See ready-made Dennis Nedry costumes at Spirit Halloween ↗
How to put it together
- 1
Put on the light blue polo shirt and tuck it neatly into the khaki pants.
- 2
Secure the khaki pants with a simple brown leather belt.
- 3
Clip the Dennis Nedry Jurassic Park ID badge to the left collar of your polo shirt.
- 4
Put on the bright yellow hooded raincoat, leaving it unbuttoned so the blue shirt and badge are visible.
- 5
Put on the clear-lens aviator glasses.
- 6
Hold the Barbasol shaving cream can in your hand as your main prop.
Makeup & hair
Style your hair in a messy, slightly damp 90s side part. For an optional late-movie look, apply a few splatters of black liquid makeup or fake mud to your face to mimic the Dilophosaurus venom attack.
Dennis Nedry for couples, groups, kids & more
- couples
- Pair up with someone dressed as a Dilophosaurus, complete with a colorful neck frill.
- group
- Join forces with John Hammond, Alan Grant, Ellie Sattler, and Ian Malcolm for a full Jurassic Park group.
- kids
- A simpler version with a yellow raincoat, glasses, and a toy dinosaur.
- Plus size
- The loose-fitting polo, pleated khakis, and oversized yellow poncho offer a very comfortable, screen-accurate fit.
- pet
- Dress your dog in a small dinosaur costume with a colorful frill to be your Dilophosaurus.
Tips
- Carry a small toy dinosaur in your raincoat pocket for quick photo ops.
- Keep the raincoat unbuttoned to ensure your ID badge and blue polo are visible in pictures.
- If you want to go extra detailed, print out a sheet of paper that says 'ACCESS DENIED' in red letters to hold.
Dennis Nedry costume FAQ
- What kind of glasses does Dennis Nedry wear?
- He wears thin, black-framed aviator-style glasses with clear prescription lenses.
- How do I make the Barbasol can prop?
- You can buy replica cans that open to reveal the embryo tubes, or simply use a real, cleaned-out vintage Barbasol can for a budget-friendly option.
- Is this costume good for cold weather?
- Yes, the yellow raincoat blocks wind and rain, and you can easily layer a sweater under the polo shirt.
Did you know? The iconic 'Ah, ah, ah! You didn't say the magic word!' screen saver animation was actually designed by the film's art department to look like a real, frustrating early-90s computer interface.