Senator McDonald may refer to:
Members of the United States Senate
edit- Alexander McDonald (American politician) (1832–1903), U.S. Senator from Arkansas from 1868 to 1871
- Joseph E. McDonald (1819–1891), U.S. Senator from Indiana from 1875 to 1881
United States state senate members
edit- Albert McDonald (1930–2014), Alabama State Senate
- Andrew J. McDonald (born 1966), Connecticut State Senate
- Charles James McDonald (1793–1860), Georgia State Senate
- Donald A. McDonald (1833–1906), Wisconsin State Senate
- Edward F. McDonald (1844–1892), New Jersey State Senate
- Jesse Fuller McDonald (1858–1942), Colorado State Senate
- John McDonald (Maine politician) (1773–1826), Maine State Senate
- Roy J. McDonald (born 1947), New York State Senate
- Simon S. McDonald (1869–1956), North Dakota State Senate
- Vickie D. McDonald (born 1947), Nebraska State Senate