Tom Delehanty

Senior Associate Attorney Rocky Mountain Office


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Perry Wheeler
Public Affairs and Communications Strategist
(202) 792-6211

Bar Admissions


Tom Delehanty joined the Rocky Mountain Office as an associate attorney in 2019. Tom’s passion and commitment for environmental stewardship originated as a kid in Idaho, where he hunted, fished, and hiked on public lands. Tom studied biology as an undergraduate, and after several field seasons collecting data in wild places, he attended Berkeley Law to become an advocate for at-risk places and ecosystems. Before joining Earthjustice, Tom clerked in the Northern District of California and worked on oil and gas issues affecting the West. His current practice focuses on public lands and wildlife. Outside of work, Tom is either playing volleyball or in the mountains hunting, fishing, backpacking, or hiking with his dog Pesto.

The Latest from Tom Delehanty

January 25, 2024

Wyoming Court Decision Helps Provide Access to Over 8 Million Acres of Public Land

Court rules that “corner-crossing” does not constitute trespass.
This Dec. 22, 2018, photo shows a pump jack over an oil well along Interstate 25 near Dacono, Colo.
May 18, 2022

The Fossil Fuel Industry is Fighting Colorado’s Important New Rules for Oil and Gas

We call on Colorado to continue its leadership in prioritizing people, wildlife, and the environment over fossil fuels.
April 5, 2021

In the News: Colorado Newsline

Colorado weighs new bonding rules to address ‘orphaned’ oil and gas wells

“It’s beyond dispute that existing bonds do not cover full cleanup costs of existing wells. This means that the state’s taxpayers bear the substantial financial risk for nonperformance of well cleanup responsibilities.”