Senator Arnold may refer to:
A. Otis Arnold (1878–1941), Illinois State Senate Alexander A. Arnold (1833–1915), Wisconsin State Senate Frank B. Arnold (1839–1890), New York State Senate Gohen C. Arnold, West Virginia State Senate Jim Arnold (Indiana politician) (born 1950), Indiana State Senate John W. Arnold (1842–1900), Illinois State Senate Louis A. Arnold (1872–?), Wisconsin State Senate Lynwood Arnold (1916–2001), Florida State Senate Norbert P. Arnold (1920–2014), Minnesota State Senate Samuel G. Arnold (1821–1880), U.S. Senator from Rhode Island Stanley Arnold (1903–1984), California State Senate