Men's Sport and Dress Shirts

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Fall Limited-Time Offer | Save on the seasonal favorites* SHOP WOMEN T&C Apply

Limited Time Offer | Purchase 2+ selected items items get extra offer* SHOP WOMEN SHOP MEN T&C apply.

Shop 2+ Selected Motion Wool suiting items get extra offer* SHOP NOW T&C apply

Welcome Offer | Subscribed to enjoy special offer on your first full-price purchase. T&C apply.

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Men's Shirts

Crisp, clean, and versatile, these are the styles you'll turn to again and again.

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Black Refine by Color: Black (3)
Blue Refine by Color: Blue (5)
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Quick Add

Motion Shirt in Motion Poplin

null ~~Price reduced from to~~ NT$ 8,500

Limited Time Offer - Buy 2+ Get 20% Off

Quick Add

Motion Shirt in Motion Poplin

null ~~Price reduced from to~~ NT$ 8,500

Limited Time Offer - Buy 2+ Get 20% Off

Quick Add

Weekend Shirt in Weekend Cotton

null ~~Price reduced from to~~ NT$ 8,950

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Weekend Shirt in Weekend Cotton

null ~~Price reduced from to~~ NT$ 8,950

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Sylvain Shirt in Structure Knit

null ~~Price reduced from to~~ NT$ 7,400

Purchase 3 Pieces to Unlock Bundle Price

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Motion Shirt in Motion Poplin

null ~~Price reduced from to~~ NT$ 8,500

Limited Time Offer - Buy 2+ Get 20% Off

Quick Add

Sylvain Shirt in Structure Knit

null ~~Price reduced from to~~ NT$ 7,400

Purchase 3 Pieces to Unlock Bundle Price

Quick Add

Sylvain Shirt in Structure Knit

null ~~Price reduced from to~~ NT$ 7,400

Purchase 3 Pieces to Unlock Bundle Price

Quick Add

Sylvain Shirt in Structure Knit

null ~~Price reduced from to~~ NT$ 7,400

Purchase 3 Pieces to Unlock Bundle Price

Quick Add

Zip Overshirt in Motion Wool

null ~~Price reduced from to~~ NT$ 11,700

Limited Time Offer - Buy 2+ Get 20% Off

Quick Add

Weekend Shirt in Weekend Cotton

null ~~Price reduced from to~~ NT$ 8,950

Quick Add

Tailored Shirt in Superior Cotton

null ~~Price reduced from to~~ NT$ 7,400

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WELCOME OFFER
(1) Promotional Period: From April 1, 2024 until further notice. (2) Eligibility: Customers who successfully subscribe to Theory Newsletters during the Promotional Period (“Eligible Customers”). (3) Designated Store in respect of this Promotion: The new Theory Online Store at hk.theory.com, tw.theory.com, sg.theory.com and au.theory.com (collectively “Theory Online Stores”). (4) How to enjoy this Promotion: Eligible Customers can enjoy 15% off on regular-priced products at Theory Online Stores (subject to the Excluded Products as defined below) (the “Discount”) by entering the promotional code at checkout. The promotional code would be sent, via email, to Eligible Customers upon successful newsletter registration. (5) General Terms and Conditions: The Discount only applies to the first order placed by Eligible Customers on Theory Online Stores. The Discount does not apply to the purchase of Bundles items and discounted products (the “Excluded Products”). The Discount cannot be used in conjunction with any other discounts, promotional offers and coupons (including but not limited to Theory VIP discounts/Theory VIP Birthday discounts, Credit Card Year-Round Discount and Theory CRM Coupons). The Discount cannot be transferred nor exchanged for cash or any other gifts or coupons. Theory reserves the right to amend these Terms and conditions without prior notice. Theory reserves the right of final decision in case of any dispute.

BUNDLE PROMOTION
(1) Promotional Period: The Promotional Period is from 1 July, 2025 until further notice. (2) Designated Store in respect of this Promotion: Theory Online Store at hk.theory.com, tw.theory.com, sg.theory.com and au.theory.com (collectively “Theory Online Stores”). (3) How to enjoy this Promotion: During the Promotional Period, all customers can enjoy an additional discount upon purchasing, as the case maybe, 2 or 3 items of the same style (as may be designated by Theory from time to time) in any size or color (collectively the “Designated Items”) in one single transaction at Theory Online Stores (collectively the “Discount”). The Designated items, and the number of Designated Items required to be purchased to unlock the Discount, will be specifically marked on Theory Online Stores. Customers are required to add the Designated Items into bag to unlock the amount of the Discount. The Discount will automatically apply at checkout. (4) General Terms and Conditions: The Discount cannot be used in conjunction with any other discounts, promotional offers and coupons (including but not limited to Theory VIP discounts/Theory VIP Birthday discounts, Credit Card Year-Round Discount and Theory CRM Coupons). The Discount cannot be transferred nor exchanged for cash or any other gifts or coupons. Theory reserves the right to amend these Terms and conditions without prior notice. Theory reserves the right of final decision in case of any dispute.

MOTION WOOL SUITING OFFER
(1) Promotional Period: The Promotional Period is from 12 October 2026 to 8 November 2026 (both days inclusive). (2) Designated Store in respect of this Promotion: Theory Online Store at hk.theory.com, tw.theory.com, sg.theory.com and au.theory.com (collectively “Theory Online Stores”). (3) How to enjoy this Promotion: During the Promotional Period, all customers can enjoy a 20% discount (the “Discount”) upon the purchase of at least two selected Motion Wool suiting items (the “Eligible Items”) in a single transaction at any Theory Online Stores. The Discount will automatically apply at checkout. (4) General Terms and Conditions: The Discount applies only to the Eligible Items and does not apply to any other items, Bundles, Core or discounted products. Save and except the shopping mall coupons and designated “Gift With Purchase” offers, the Discount cannot be used in conjunction with any other discounts, promotional offers or coupons, including but not limited to Theory VIP discounts, Theory VIP Birthday discounts, shopping mall loyalty program discounts, Credit Card Year-Round Discounts and Theory CRM Coupons. The Discount cannot be transferred or exchanged for cash, gifts or coupons. No exchange or return will be provided for products purchased with the Discount under this Promotion. Theory reserves the right to amend these Terms and Conditions without prior notice. In case of any dispute, Theory reserves the right of final decision.

FALL LIMITED-TIME OFFER
(1) Promotional Period: The Promotional Period is from 26 October 2026 to 22 November 2026 (both days inclusive). (2) Designated Store in respect of this Promotion: Theory Online Store at hk.theory.com, tw.theory.com, sg.theory.com and au.theory.com (collectively “Theory Online Stores”). (3) How to enjoy this Promotion: During the Promotional Period, all customers can enjoy a 30% discount (the “Discount”) on selected items (the “Eligible Items”) upon purchase in one single transaction at any Theory Store. The Discount will automatically apply at checkout. (4) General Terms and Conditions: The Discount applies to the Eligible Items only. Save and except shopping mall coupons and designated “Gift With Purchase” offers, the Discount cannot be used in conjunction with any other discounts, promotional offers and coupons (including but not limited to Theory VIP discounts/Theory VIP Birthday discounts, shopping mall loyalty program discounts, Credit Card Year-Round Discount and Theory CRM Coupons). The Discount cannot be transferred nor exchanged for cash or any other gifts or coupons. Theory reserves the right to amend these Terms and Conditions without prior notice. Theory reserves the right of final decision in case of any dispute.

FLANNEL + MOTION COLLECTION OFFER
(1) Promotional Period: The Promotional Period is from 29 October 2026 to 8 November 2026 (both days inclusive). (2) Designated Store in respect of this Promotion: Theory Online Store at hk.theory.com, tw.theory.com, sg.theory.com and au.theory.com (collectively “Theory Online Stores”). (3) How to enjoy this Promotion: During the Promotional Period, all customers can enjoy a 20% discount (the “Discount”) upon the purchase of any two selected Flannel and/or Motion Collection items (the “Eligible Items”) in one single transaction at any Theory Online Stores. The Discount will automatically apply at checkout. (4) General Terms and Conditions: The Discount applies only to the Eligible Items and does not apply to Bundles, Core/Permanent items, discounted items or any other items. Save and except designated cash rebate offers, shopping mall coupons and designated “Gift With Purchase” offers, the Discount cannot be used in conjunction with any other discounts, promotional offers or coupons, including but not limited to Theory VIP discounts, Theory VIP Birthday discounts, shopping mall loyalty programme discounts, Credit Card Year-Round Discounts and Theory CRM Coupons. Theory reserves the right to amend these Terms and Conditions without prior notice. In case of any dispute, Theory reserves the right of final decision.