William M. Straus (born June 26, 1956 in East Orange, New Jersey[1]) is a member of the Massachusetts House of Representatives.

He later served as a member of the Massachusetts Hazardous Waste Facilities Site Safety Council and the Mattapoisett Conservation Commission.

In the 2009-2010 legislative term Representative Straus serves as the Chairman of the Joint Committee on Environment and Agriculture.

During the 2005-2006 term of the Massachusetts Legislature he was a member of the Joint Committees on the Environment, Consumer Protection and Bonding-Capital Expenditures.

Straus has been very involved in the South Coast Rail project through his work on the Joint Committee on Transportation.