Senator McDermott may refer to:
Allan L. McDermott (1854–1908), New Jersey State Senate Frank X. McDermott (1924–2011), New Jersey State Senate Frederick T. McDermott (1906–2003), Massachusetts State Senate Jim McDermott (born 1936), Washington State Senate Joe McDermott (politician) (born 1967), Washington State Senate Joseph H. McDermott (1871–1930), West Virginia State Senate