Active THEORY Discount Codes
15%
OFF
OFF
Coupon valid for full-priced items, for new and existing customers
Enjoy a 15% discount site-wide with this THEORY discount code
Copy this code and use at checkout
Coupon valid for full-priced items, for new and existing customers
15%
OFF
OFF
New app users on THEORY.com get a 15% discount using this promo code
20%
OFF
OFF
Coupon only valid for in-app orders
Get 20% off your order using this THEORY coupon code at checkout
Copy this code and use at checkout
Coupon only valid for in-app orders
Frequently Asked Questions about THEORY (FAQ)
What is the best value and fully functional THEORY discount code available in May 2025?
The best value and fully functional THEORY discount code currently available is (W-7AAT-LMUM-BX), offering customers a discount of 15% in May 2025.
How to use a THEORY promo code
Follow this guide and learn how to successfully apply a THEORY promo code at checkout
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1Add all the products you want to order in your THEORY online shopping bag
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2Click on the Shopping Bag symbol in the top right corner to confirm the order
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3On the order summary page, locate the "Promo code" field and paste the exact promo code
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4Click "Apply" to redeem the offer and your discount will be automatically calculated
Popular THEORY Promo Codes & Sales
| Promo Code | Discount | Expiry Date |
|---|---|---|
| W-7AAT-LMUM-** | Enjoy a 15% discount site-wide with this THEORY discount code | Expires 2026-07-31 |
| APPX** | New app users on THEORY.com get a 15% discount using this promo code | Expires 2026-04-30 |
| APP** | Get 20% off your order using this THEORY coupon code at checkout | Expires 2026-05-31 |
