Senator Harper may refer to:
Members of the United States Senate Robert Goodloe Harper (1765–1825), U.S. Senator from Maryland in 1816 William Harper (South Carolina politician) (1790–1847), U.S. Senator from South Carolina in 1832
United States state senate members Francis Jacob Harper (1800–1837), Pennsylvania State Senate George B. Harper (1918–1988), New Jersey State Senate Jack Harper (politician) (born 1967), Arizona State Senate Joseph M. Harper (1787–1865), New Hampshire State Senate Nick Harper (politician) (born 1979), Washington State Senate Thelma Harper (politician) (1940–2021), Tennessee State Senate Tyler Harper (born 1986), Georgia State Senate Wayne Harper (born 1956), Utah State Senate