DENNIS makes school uniforms easy.™

Our Mission

Make it easy for schools to design and maintain best-in-class uniform programs that meet their goals and values, while providing families with seamless shopping experiences for high-quality, comfortable uniform products that students deserve.

More Than a Century of Expertise

Established in 1920 in Portland, Oregon, 2020 marked a century of expertise for DENNIS Uniform. After more than 100 years in business in ever-changing times, we’ve earned our title as uniform experts! Over 2,000 top schools rely on DENNIS to design best-in-class programs delivering comfortable and durable uniforms for students across the nation.

A Company of Families

From our very beginnings, we have remained connected to our strong values, focusing on serving the community with pride. We’re happy to represent a truly people-centered company structure, making strategic partnerships and maintaining the wealth of knowledge that our industry has fostered throughout the last century. We are the uniform experts not just because of our long history and experience, but because of our enthusiasm for working alongside and learning from our partner companies. Together we truly are stronger than ever.  


We got our start manufacturing nursing uniforms and professional wear in Portland, serving the local working community. 


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.


After the war, we created our first line of school uniforms, including our very first plaid, and opened our first retail store in 1951.


We continue growing and opening new DENNIS retail locations across the country.


We partnered with Larose School Uniforms, (founded 1978) – bringing Ivonne Larose, second-generation company leader, on board as DENNIS’ VP of New Business Development.

Read more about Larose School Uniforms on our Study Hall Blog.


AA Uniforms (founded 1956) joined DENNIS, bringing Barbara Blanck, second-generation company leader, on board as DENNIS’ VP of Sales.

Read more about AA Uniforms on our Study Hall Blog.


We partnered with two notable uniform companies: Mills Uniform (founded 1947) and Top Marks (founded 1986). Suzette Foley-Mills (third-generation company leader) joined the DENNIS board. With the addition of Top Marks to the DENNIS universe, we entered the Canadian market, bringing Howard Vineberg, Jeremy Carson and Jennifer Vineburg (second-generation company leaders) to our team.

Read more about Mills Uniform on our Study Hall Blog.

Today and Beyond 

With 40+ retail stores nationwide, a busy online store, we are the #1 school uniform provider in the US, serving over 2,000 schools and outfitting more than half a million students every year! With our new partnership in Canada, we look forward to providing Canadian students with the same quality and service we’ve become known for.  

Our Core Values


Make It Easy.

Simplicity is our true north. From design to selection, purchasing to the first wear, we strive to make every experience effortless.


Earn Trust.

Through transparency, reliability and consistency, we dedicate our efforts to earning trust from every school and every family.


Dedicated To Our Core.

In an industry where brands compete for attention, we stay focused on delivering top-quality uniforms and best-in-class service.


Quality You Can Depend On.

From innovative fabric to detailed improvements, every product is tested for durability and backed by our guarantee.


Listen. Learn. Lead.

Our top priority is listening to, learning from and staying aligned with every school’s objectives and every customer’s expectations.

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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.

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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 normal wear and tear. 

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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 administrators, communities and families.

  • Fundraising
  • Event Sponsorship
  • Seasonal Promotions
  • Uniform Financial Aid
  • Uniform Scholarships
  • ...and so much more.
Learn More About Partnerships
Associated Organizations

School Uniform Shopping Has Never Been Easier


Webstores customized to your school uniform program, open 24/7.

Shop for Your School

In Stores

40+ company-owned retail stores across the USA, fully staffed and ready to serve, with local shipping and an expanded workforce during the busy back-to-school rush.

Find a Store

State-of-the-Art Technology

We continue to invest in and pursue the most innovative technology to improve every customer’s experience. From mobile-friendly layouts to simple navigation and fast checkout, it all comes down to making uniform shopping easy for busy families. 

Tour a Webstore

The Perfect Fit

Take the guesswork out of shopping and get the right size the first time. Our Sizing & Fit Hub is a helpful resource built by Uniform Experts, featuring all the real tools that families need. 

  • Accurately Measure Your Child
  • Printable Measuring Tape
  • Size Charts for All Ages
  • Comparison Charts & More
Sizing and Fit

Expert Answers

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

  • Live Chat
  • Send us an Email
  • Customer Care Center: 800.854.6951
Customer Service