Senator Mason may refer to:
Members of the United States Senate Armistead Thomson Mason (1787–1819), U.S. Senator from Virginia from 1816 to 1817 James Murray Mason (1798–1871), U.S. Senator from Virginia from 1847 to 1861 Jonathan Mason (Massachusetts politician) (1756–1831), U.S. Senator from Massachusetts from 1800 to 1803 Jeremiah Mason (1768–1848), U.S. Senator from New Hampshire from 1813 to 1817 Stevens Thomson Mason (Virginia politician) (1760–1803), U.S. Senator from Virginia from 1794 to 1803 William E. Mason (American politician) (1850–1921), U.S. Senator from Illinois from 1897 to 1903
United States state senate members Edward J. Mason (politician) (1930–2020), Maryland State Senate Edwyn E. Mason (1913–2003), New York State Senate Garrett Mason (born 1985), Maine State Senate James W. Mason (1841–1875), Arkansas State Senate John E. Mason (1854–1910), Virginia State Senate John Y. Mason (1799–1859), Virginia State Senate Lance Mason (born 1967), Ohio State Senate Lowell B. Mason (1893–1983), Illinois State Senate Monty Mason (born 1967), Virginia State Senate Noah M. Mason (1882–1965), Illinois State Senate Ralph L. Mason (1896–1977), Maryland State Senate Samson Mason (1793–1869), Ohio State Senate