ANDREW STEWART is a partner in the firm’s Environmental, Health, and Safety practice, which has a Chambers USA 2024 Band 1 ranking in the District of Columbia and was named a “Practice Group of the Year” by Law360 in the Environmental category. Andrew is recognized by Chambers USA for Environment in District of Columbia (2024–2026).

Andrew is also listed among the 2025 Lawdragon “Green 500: Leaders in Environmental Law.”

He is a former senior official from the U.S. Environmental Protection Agency (EPA), who helps clients solve a broad range of compliance and enforcement issues. Andrew focuses his practice on complex, high-stakes environmental matters, where an insider’s knowledge of the regulatory process is particularly important. These representations include enforcement matters, involving the EPA, state agencies, and the Department of Justice that arise under multiple environmental laws. Clients say, “He always provides timely and practical guidance on managing high-stakes and complex scenarios, drawing on his vast knowledge of the enforcement process” (Chambers USA, 2026). Andrew is also a member of Sidley’s AI Working Group and advises clients on managing risks and compliance issues across the AI technology stack.

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+1-202-736-8854

Andrew R. Stewart

Partner
Sidley
District of Columbia

Practice Area: Environmental, Health, and Safety

WHAT CLIENTS SAY

"Andrew provides extensive information, understanding, and skill across specific and varied subjects."

MY CLIENT PHILOSOPHY

"I strive to act as a true business partner to my clients, drawing on my EPA experience to help clients understand how regulators think and act. Learning each client's operations, priorities, and risk tolerance allows me to provide practical, strategic advice that aligns with their real-world business goals—not just what the regulations say on paper. I genuinely love this work and am always eager to give my clients timely, straight-forward guidance—especially when the stakes are highest."

– Andrew R. Stewart

ALL-STAR BIOGRAPHY

ANDREW STEWART is a partner in the firm’s Environmental, Health, and Safety practice, which has a Chambers USA 2024 Band 1 ranking in the District of Columbia and was named a “Practice Group of the Year” by Law360 in the Environmental category. Andrew is recognized by Chambers USA for Environment in District of Columbia (2024–2026).

Andrew is also listed among the 2025 Lawdragon “Green 500: Leaders in Environmental Law.”

He is a former senior official from the U.S. Environmental Protection Agency (EPA), who helps clients solve a broad range of compliance and enforcement issues. Andrew focuses his practice on complex, high-stakes environmental matters, where an insider’s knowledge of the regulatory process is particularly important. These representations include enforcement matters, involving the EPA, state agencies, and the Department of Justice that arise under multiple environmental laws. Clients say, “He always provides timely and practical guidance on managing high-stakes and complex scenarios, drawing on his vast knowledge of the enforcement process” (Chambers USA, 2026). Andrew is also a member of Sidley’s AI Working Group and advises clients on managing risks and compliance issues across the AI technology stack.

Visit All-Star's Firm »

+1-202-736-8854

Andrew R. Stewart

Partner
Sidley
District of Columbia

Practice Area: Environmental, Health, and Safety

ALL-STAR BIOGRAPHY

ANDREW STEWART is a partner in the firm’s Environmental, Health, and Safety practice, which has a Chambers USA 2024 Band 1 ranking in the District of Columbia and was named a “Practice Group of the Year” by Law360 in the Environmental category. Andrew is recognized by Chambers USA for Environment in District of Columbia (2024–2026).

Andrew is also listed among the 2025 Lawdragon “Green 500: Leaders in Environmental Law.”

He is a former senior official from the U.S. Environmental Protection Agency (EPA), who helps clients solve a broad range of compliance and enforcement issues. Andrew focuses his practice on complex, high-stakes environmental matters, where an insider’s knowledge of the regulatory process is particularly important. These representations include enforcement matters, involving the EPA, state agencies, and the Department of Justice that arise under multiple environmental laws. Clients say, “He always provides timely and practical guidance on managing high-stakes and complex scenarios, drawing on his vast knowledge of the enforcement process” (Chambers USA, 2026). Andrew is also a member of Sidley’s AI Working Group and advises clients on managing risks and compliance issues across the AI technology stack.

Visit All-Star's Firm »