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Representative Mark N. Dion
District #43
Representing: Falmouth (part) and Portland (part)



Rep. Mark Dion is serving his third term in the Maine House of Representatives. He is House chair of the Energy, Utilities and Technology Committee. He previously served on the Energy Committee and as House chair of the Criminal Justice and Public Safety Committee.

Dion, an attorney with a practice in Portland, was sheriff of Cumberland County for 12 years and an officer in the Portland Police Department for 21 years. He has been an advocate on mental health and substance abuse policy, community correction practices and inter-agency partnerships involving public health and safety.

In 2013, the Maine chapter of the National Association of Social Workers honored Dion as Legislator of the Year. The award recognized his longtime advocacy on behalf of jail inmates in need of mental health services.

Dion is a graduate of the University of Maine School of Law and Harvard University’s Senior Executives Program in State and Local Government.

He is a member of the Maine-Canadian Legislative Advisory Commission, a standing commission of Maine government and business leaders dedicated to maintaining and strengthening strong economic and cultural ties between the people of Maine and Canada.

Dion lives in Portland with his wife, Cheryl. They have two adult daughters.

To view high resolution photos of Rep. Mark Dion click here.


Rep. Dion serves as the House chair on the Joint Standing Committee on Energy, Utilities and Technology.

Brief description of the subject matter handled by the committee: Energy policy, including energy resources, efficiency and conservation; insulation; electric industry, including supply, transmission and distribution; natural gas industry; telecommunications industry, including mobile, telephone, Internet, broadband and cable television services; E-9-1-1; water and sewer utilities, including district charters; Public Utilities Commission; Office of the Public Advocate; Governor’s Office of Independence and Security; and Efficiency Maine Trust.

For more information about the schedule of committee hearings or to sign up for advance notice of public hearings click here.


Click on the button below to see all bills, joint resolutions and orders I sponsored or cosponsored this session, as well as legislative sentiments that honor and recognize people from our district and throughout the state.





To do a general bill search, click here.

Contact Me

Thank you for taking time to contact me. You may use the online contact form to reach me.

You can also contact me at my home:

45 Allison Avenue
Portland, ME 04103
Home tel: (207) 797-6341

When the Legislature is in session, you can leave a message for me by calling the State House Message Phone: (800) 423-2900 or the State House TTY Line: 207) 287-4469.