Senator Morrill may refer to:

Members of the United States Senate Justin Smith Morrill (1810–1898), U.S. Senator from Vermont from 1867 to 1898 Lot M. Morrill (1813–1883), U.S. Senator from Maine from 1869 to 1876

United States state senate members Edmund Needham Morrill (1834–1909), Kansas State Senate

See also David L. Morril (1772–1849), U.S. Senator from New Hampshire from 1817 to 1823 Senator Morrell (disambiguation)