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
Copy this code and use at checkout
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
You could try expired codes, sometimes you might find one that works
Frequently Asked Questions about THEORY (FAQ)
💡 What is the best value and fully functional THEORY discount code available in August 2025?
The best value and fully functional THEORY discount code currently available is (W-7AAT-LMUM-BX), offering customers a discount of 15% in August 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-BX | Enjoy a 15% discount site-wide with this THEORY discount code | Expires 2026-07-31 |
| APPX15 | New app users on THEORY.com get a 15% discount using this promo code | Expires 2026-04-30 |
| APP20 | Get 20% off your order using this THEORY coupon code at checkout | Expires 2026-05-31 |