ISA Certified Arborist Directory

Searching for a certified arborist is easy with our search tool below. Simply enter the name and/or company of the arborist you're seeking, or you can search by geographic location and/or specialty. If your search leads to no results, try changing your criteria and searching again. If you wish to simply check if an arborist is certified you can go to ISA's main site for a complete accounting of all ISA Certified Arborists registered around the world.

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What is an ISA Certified Arborist?

By definition, an “arborist” is one trained in the art and science of planting, caring for, and maintaining individual trees. An "ISA Certified Arborist" is an individual, with at least three years of experience, who has passed a comprehensive certification exam developed by leading tree-care experts. The certification process is a non-governmental, voluntary process administered by the International Society of Arboriculture (ISA).

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If you're looking for an arborist outside of the Pacific Northwest region please visit the international website: www.isa-arbor.com

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