Sal N. DiDomenico is an American state legislator who has served in the Massachusetts Senate since May 2010. He is a Democrat representing the Middlesex and Suffolk district, which includes his hometown of Everett and parts of several other cities. He won a special election to succeed the retiring Anthony D. Galluccio. He had been Gallucio's chief of staff since 2007. From 2004 to 2010 he was a member of the Everett Common Council.