Serving the Inland Empire Since 1936
A family-owned dealership built on hard work, reliability, and a commitment to keeping our customers moving.
A Legacy Built on Equipment, Service, and Trust
Glenn B. Dorning, Inc. has been serving the Ontario community and the greater Inland Empire since 1936. What started as a small operation has grown into one of the region’s most trusted equipment dealerships.
We’ve built our reputation by focusing on what matters most—providing dependable equipment, knowledgeable support, and service our customers can rely on.
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Today, we continue that same commitment by helping contractors, property owners, and businesses find the right equipment and keep it running.
90 Years of Experience. Still Improving.
Since 1936, Glenn B. Dorning, Inc. has built its reputation by serving generations of customers throughout the Inland Empire. While a lot has changed over nine decades, our commitment to dependable service, knowledgeable support, and doing right by our customers has remained constant.
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In 2025, that commitment was recognized when Glenn B. Dorning, Inc. was named a Kubota Kaizen Dealer of Excellence. The recognition is especially meaningful as we celebrate our 90th anniversary—not simply because of how long we've been here, but because we continue looking for ways to improve how we serve our customers.
What We Help You Do
Find the Right Equipment
From compact tractors to construction equipment, we help you choose what fits your needs.
Keep It Running
Our service department is equipped to handle maintenance and repairs to minimize downtime.
Get Parts Fast
We carry a large inventory of OEM parts so you can get back to work quickly.
Proud to Be Part of the Ontario Community
See how Glenn B. Dorning, Inc. has been serving the community and supporting local businesses.
Conveniently Located in Ontario, CA
We are located on Holt Boulevard in Ontario, just north of the Ontario Airport and easily accessible from the I-10 freeway.
