Your Go-To Same Day Custom T-Shirt Store in Ontario

When you’re looking for custom t-shirts in Ontario, California, Custom One Online is your trusted local partner for same-day service and premium results. We produce high-quality apparel for businesses, schools, sports teams, events, and individuals, offering vibrant, long-lasting prints that stand out. With Same-Day Shipping, you can meet tight deadlines without sacrificing quality. Our selection includes long-sleeve t-shirts, hoodies & sweatshirts, and tank tops, all ready for customization. As a dedicated local t-shirt store, we guide you through design choices, material selection, and printing options to ensure your order is exactly how you envisioned it.

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Same Day T-Shirt Printing

Get Same Day Custom T-Shirt with No-Minimum or setup Fee. Order Online! or Email Us for Assistance! Cutoff Time Mon-Fri 12:00 PM EST

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Wholesale Screen Printing

With the knowledge of the finest printing tech and the capability to print thousands of shirts on a daily basis, we make the best custom T-shirts wholesale service provider in the region.

Custom T-shirts & Promotional Products for Your Group

Our top-selling Apparel for every occasion!

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Our Services – Custom Printing Solutions for Every Need

From screen printing to direct-to-garment and vinyl transfers, we offer premium printing services tailored to your unique needs.

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Apparel Decoration

Professional Screen Printing Services in Ontario

If you’re searching for “screen printing near me” in Ontario, Custom One Online delivers professional screen printing services designed for both small and bulk orders. We use industry-leading inks and advanced printing technology to create bold, precise designs ideal for uniforms, event merchandise, and promotional apparel. Our screen printing wholesale service helps businesses, schools, and organizations save money on large runs without compromising quality. The screen printing process forces ink through a mesh stencil onto fabric, producing crisp, durable results that maintain their look after repeated washes. Whether you need 25 shirts or 2,500, our team ensures your project is delivered on time and on point.

Modern Direct-to-Garment (DTG) Printing in Ontario

For high-detail, full-color prints without setup fees, our Direct-to-Garment (DTG) printing service in Ontario is the perfect choice. Using state-of-the-art printing equipment, DTG applies water-based inks directly onto the garment for a soft, breathable finish that resists cracking and peeling. This method is ideal for intricate designs, photographic images, and multi-color logos, making it a favorite for short runs and special projects. Whether you’re producing merchandise for a concert, shirts for a charity event, or a one-off gift, DTG printing delivers stunning results with fast turnaround times.

For novelty shirts and design inspiration, visit T-Shirt Don.

Direct-to-Film (DTF) Transfers for Durable Designs

Our Direct-to-Film (DTF) printing option in Ontario offers unmatched versatility and durability for your custom apparel needs. With DTF printing, designs are printed onto a transfer film, coated with adhesive, and heat-pressed onto the garment, producing vivid colors and long-lasting wear. This method works on a variety of fabrics, including cotton, polyester, blends, and specialty materials, making it perfect for businesses, schools, and events. Known for handling detailed graphics and bold colors with ease, DTF is an excellent choice for customers seeking “custom t-shirts near me” that look great and last.

For novelty sports teams' products, visit Big Fan Arena for officially licensed merchandise.

Apparel Options for Every Occasion

At Custom One Online, we offer much more than just t-shirts in Ontario. Our lineup includes women’s apparel, kids’ apparel, and pants & shorts, each customizable with your designs. We stock casual, athletic, and event-ready clothing to match your style and purpose. Whether it’s a family reunion, sports team gear, corporate uniforms, or festival merchandise, we have the right garments and printing expertise to make it happen. We also offer an art repair and review service to ensure your designs print flawlessly, even from lower-quality files.

Don't take our word for it ...

  • Top quality

    Very high quality T shirts and very clear screen printing! The mock up does not do the final product justice! I’ll order again!


    Mark Kirlin
  • Great selection

    Shirts were Perfect !!! Heavier construction than I expected which is awesome, and the print was also heavy duty and to perfect detail.


    Lucas “Jonny Bright” Martin
  • Excellent service

    My 2 shirts came out awesome!!! They created a talking point between me & my favorite guitarist GeorgeLynch. (At his final 2 AZ shows). He loved the shirts & asked his guys "why they didn't have shirts like mine?"


    Ken Servais
  • Fast shipping

    Our t-shirts look great - and we received them quickly and at a great price. These are the folks I will always turn to for personalized tees!


    Julie Weir
  • Reliable Store

    The shirts came out great. Beautiful printing. It held up great in the wash. Thank you for a seamless and smooth transaction. I will be back for more!!!


    Brian Hopkins
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Request A Quote!

We're available 24/7 to assist. Just let us know what we can help you with and we'll do our best.

Why Ontario Chooses Custom One Online

From downtown Ontario to the surrounding neighborhoods, customers choose Custom One Online because we combine speed, quality, and exceptional customer service. We understand the demand for quick turnaround on apparel for trade shows, community events, and local sports, which is why our same-day printing service is so valuable. Every order, large or small, is handled with the same attention to detail and commitment to excellence. Our reputation as the go-to local t-shirt store in Ontario comes from delivering consistent, professional results that customers can count on for any occasion.

Located at Ontario Mills 1 Mills Cir, Ontario, CA 91764

Frequently Asked Questions – Your Custom Printing Guide

Find answers to common questions about our custom printing services, ordering process, shipping, and more at Custom One.