Senator Brewster may refer to:

Members of the United States Senate Daniel Brewster (1923–2007), U.S. Senator from Maryland from 1963 to 1969 Owen Brewster (1888–1961), U.S. Senator from Maine from 1941 to 1952

United States state senate members Jim Brewster (fl. 2010s), Pennsylvania State Senate Sardius Mason Brewster (1870–1936), Kansas State Senate