Senator Johnson may refer to:

• Doris Sands Johnson (1921–1983), Bahamian Senator from 1967 to 1983

• Janis Johnson (born 1946), Canadian Senator from Manitoba from 1990 to 2016

• Herschel Vespasian Johnson (1812–1880), Confederate States Senator from Georgia from 1863 to 1865
• Waldo P. Johnson (1817–1885), Confederate States Senator from Missouri from 1863 to 1865

• Elijah Johnson (agent) (c. 1789–1849), former president pro tempore of the Senate of Liberia
• Prince Johnson (born 1952), Liberian Senator from Nimba County since 2006

• Andrew Johnson (1808–1875), U.S. Senator from Tennessee from 1857 to 1862 and in 1875
• Charles Fletcher Johnson (1859–1930), U.S. Senator from Maine from 1911 to 1917
• Edwin C. Johnson (1884–1970), U.S. Senator from Colorado from 1937 to 1955
• Edwin S. Johnson (1857–1933), U.S. Senator from South Dakota from 1915 to 1921
• Henry Johnson (Louisiana politician) (1783–1864), U.S. Senator from Louisiana from 1818 to 1824
• Herschel Vespasian Johnson (1812–1880), U.S. Senator from Georgia from 1848 to 1849
• Hiram Johnson (1866–1945), U.S. Senator from California from 1917 to 1945
• Lyndon B. Johnson (1908–1973), U.S. Senator from Texas from 1949 to 1961
• Magnus Johnson (1871–1936), U.S. Senator from Minnesota from 1923 to 1925
• Martin N. Johnson (1850–1909), U.S. Senator from North Dakota in 1909
• Reverdy Johnson (1796–1876), U.S. Senator from Maryland from 1863 to 1868
• Richard Mentor Johnson (1780–1850), U.S. Senator from Kentucky from 1819 to 1829
• Robert Ward Johnson (1814–1879), U.S. Senator from Arkansas from 1853 to 1861
• Ron Johnson (born 1955), U.S. Senator from Wisconsin since 2011
• Tim Johnson (South Dakota politician) (1946–2024), U.S. Senator from South Dakota from 1997 to 2015
• Waldo P. Johnson (1817–1885), U.S. Senator from Missouri from 1861 to 1862
• William Samuel Johnson (1727–1819), U.S. Senator from Connecticut from 1789 to 1791

• Bob Johnson (Arkansas state senator) (born 1962)
• David Johnson (Arkansas politician) (fl. 2000s–2010s)
• James D. Johnson (1924–2010)

• George A. Johnson (1829–1894)
• Grove L. Johnson (1841–1926)
• Harold T. Johnson (1907–1988)
• James A. Johnson (California politician) (1829–1896)
• Ray E. Johnson (1911–1993)
• Ross Johnson (politician) (1939–2017)

• Donna R. Johnson (born c. 1934)
• Steve Johnson (Colorado politician) (born 1960)

• Beth Johnson (American politician) (1909–1973)
• Dewey M. Johnson (1917–1989)
• Elisha G. Johnson (died 1875)
• J. B. Johnson (Florida politician) (1868–1940)

• B. Ed Johnson (1914–1983)
• Don Johnson Jr. (born 1948)
• Eric Johnson (Georgia politician) (born 1953)
• Leroy Johnson (Georgia politician) (1928–2019)

• Christine J. Johnson (born 1953)
• Tom Johnson (Illinois politician) (1945–2018)

• Ben Johnson (Kentucky politician) (1858–1950)
• James Johnson (Kentucky politician) (1774–1826)
• Thomas Johnson (Kentucky politician) (1812–1906)

• Reverdy Johnson (1796–1876)
• Thomas Francis Johnson (1909–1988)

• Bert Johnson (Michigan politician) (born 1973)
• Daniel Johnson (Michigan politician) (1821–1860)
• Ransom C. Johnson (1849–1904)
• Ruth Johnson (born 1955)
• Shirley Johnson (1937–2021)

• Alice Johnson (politician) (born 1941)
• Dave Johnson (Minnesota politician) (born 1963)
• Dean Johnson (politician) (born 1947)
• Debbie Johnson (born 1957)
• Janet Johnson (politician) (1940–1999)
• John A. Johnson (Minnesota politician) (1883–1962)
• John Albert Johnson (1861–1909)
• Mark Johnson (Minnesota politician)
• Robert George Johnson (1925–1969)

• Fred Gustus Johnson (1876–1951)
• Jerry Johnson (politician) (born 1942)
• Joel T. Johnson (born 1936)
• Lowell Johnson (1920–2009)
• Rod Johnson (Nebraska politician) (born 1957)
• Roy W. Johnson (politician) (1882–1947)
• Vard Johnson (born 1939)

• James A. C. Johnson (1867–1937)
• William M. Johnson (1847–1928)

• Craig M. Johnson (born 1971)
• Daniel Johnson (Rockland County, NY) (1790–1875)
• George Y. Johnson (1820–1872)
• Noadiah Johnson (1795–1839)
• Owen H. Johnson (1929–2014)
• Robert E. Johnson (New York politician) (1909–1995)
• Stephen C. Johnson (state senator) (fl. 1840s)
• William Elting Johnson (1837–1912)
• William Johnson (Seneca County, NY) (1821–1875)

• Charles Johnson (North Carolina politician) (died 1802)
• Todd Johnson (politician) (born 1970s)

• Anice Johnson (1919–1992), Ohio State Senate
• Bruce Johnson (Ohio politician) (born 1960)
• Calvin C. Johnson (born 1929)
• Jeff Johnson (Ohio politician) (born 1958)
• John Johnson (Ohio congressman) (1805–1867)

• Constance N. Johnson (born 1952)
• Jed Johnson (Oklahoma politician) (1888–1963)
• Mike Johnson (Oklahoma politician) (born 1944)

• John B. Johnson (politician) (1885–1985)
• Robert A. Johnson (South Dakota politician) (1921–2014)

• Eddie Bernice Johnson (born 1935)
• Nathan M. Johnson (born 1968)

• Daniel D. Johnson (1836–1893)
• Okey Johnson (1834–1903)

• Bruce Johnson (Wisconsin politician) (1875–1932)
• John Anders Johnson (1832–1901)
• La Tonya Johnson (born 1972)
• Olaf H. Johnson (1892–1966)
• Otis Wells Johnson (1855–1926)
• Raymond C. Johnson (1936–1979)

• A. R. Johnson (1856–1933), Louisiana State Senate
• Betsy Johnson (born 1951), Oregon State Senate
• Chapman Johnson (1779–1849), Virginia State Senate
• Chris Johnson (Maine politician) (fl. 2010s), Maine State Senate
• Dan G. Johnson (fl. 2010s), Idaho State Senate
• David Johnson (Iowa politician) (born 1950), Iowa State Senate
• Doris Johnson (1923–2021), Washington State Senate
• Jack Johnson (American politician) (born 1968), Tennessee State Senate
• James Hutchins Johnson (1802–1887), New Hampshire State Senate
• John J. Johnson (1926–2016), Missouri State Senate
• Joseph B. Johnson (1893–1986), Vermont State Senate
• Karen Johnson (Arizona politician), Arizona State Senate
• Kevin L. Johnson (born 1960), South Carolina State Senate
• Nancy Johnson (born 1935), Connecticut State Senate
• Timothy L. Johnson (born 1959), Mississippi State Senate
• Wayne Johnson (Wyoming politician) (born 1942), Wyoming State Senate

• Senator Johnston (disambiguation)