Michael R. Knapik (born February 11, 1963) is an American politician who served in the Massachusetts Senate (1995–2013) and Massachusetts House of Representatives (1991–1995). In the state Senate he represented the 2nd Hampden and Hampshire District. He is a member of the Republican Party. Knapik resigned August 9, 2013 to take a position at Westfield State University, leaving only three Republicans in the state Senate. He is the brother of Daniel Knapik, who served as Mayor of Westfield from 2010 to 2015.