Welcome to DENNIS! Based in Portland, Oregon, USA, we’ve been designing uniforms and uniform programs for nearly a century. We’re proud to partner with schools and families as they work to bring their educational vision to life.

Learn more about our company

A century of expertise.

Established in 1920 in Portland, Oregon, 2020 marked a century of expertise for DENNIS Uniform. After 100 years, we’ve earned the title of uniform experts - we’re celebrating the milestone and keeping the title for the next hundred years.



As the largest school uniform provider in the nation, over 2,000 top schools rely on DENNIS to design top-quality school uniforms and deliver best-in-class uniform programs.


Humble beginnings.

1920s We got our start manufacturing nursing uniforms in our Portland, Oregon factory - the very same union factory we use today.


1940s Shifting our focus to serve the war effort during WWII, we supplied linens and apparel to military personnel shipping out of the Port of Portland.


1950s After the war’s end, we created our first line of school uniforms, including our very first plaid. We opened our first retail uniform store in 1951.


Today With 30+ retail stores nationwide and an online store open 24/7, we are the #1 school uniform provider in the USA, serving over 2,000 schools and outfitting half a million students every year.

Moral Fiber.

We manufacture responsibly - fabric sources matter! Whether a uniform is made at our Portland factory or sourced from a carefully selected and monitored partner, we use domestic fabrics whenever possible and ensure all partners meet the strictest standards of working conditions and fair labor practices. Manufacturing locally is a commitment we will always honor, supporting the local economy and controlling the quality of our garments.


Delivering quality.

Our foundation is our superior yarns - enduring every student’s active lifestyle, our uniforms are best in class and built to last. We consistently inspect and refine all our products, maintaining our high standards and exceeding our customer’s expectations.


Every DENNIS product is backed by our 100% guarantee for life against manufacturing defects and guaranteed to withstand an entire year’s worth of wear and tear. Our uniforms are the best in the industry - designed in-house and manufactured with over 100 years’ experience.


School champions.

The best schools in the nation rely on DENNIS because we’re so much more than outfitters - we forge lasting partnerships that benefit administrations, communities and families.


  • • Fundraising

  • • Event Sponsorship

  • • Seasonal Promotions

  • • Uniform Financial Aid

  • • Uniform Scholarships

  • ...and so much more.




We make it easy.

Online: Web stores customized to your school uniform program, open 24/7.





And In Store: 30+ company-owned stores across the USA, fully staffed and ready to serve, with an expanded workforce during the busy back-to-school rush.



Tailored webstores, seamless checkout.

We continue to invest in and pursue top of the line technology to improve every customer’s experience. From mobile-friendly school stores with customized branding, to a user-friendly catalog, DENNIS makes school uniforms easy.™



The perfect fit.

Take the guesswork out of shopping and purchase the right uniform the first time! Our Sizing & Fit Hub is a helpful resource built by our uniform experts, featuring all the real tools customers need.


  • • Navigate Your Webstore

  • • Accurately Measure Your Child

  • • Printable Measuring Tape

  • • Size Charts for All Ages

  • • Product Fit Video Galleries

  • • Size Comparisons & more.



Expert answers.

Our team of helpful customer service representatives know every school’s uniform program. Reach out to us any time with any question - we’re here to help.


  • National Customer Service: 800.854.6951

  • Hours



The DENNIS difference.

See what a difference DENNIS makes as a uniform partner to your school, community and families.