1st Senate district

• 1st District
• Alabama's 1st Senate district
• California's 1st State Senatorial district
• Colorado's 1st Senate district
• Delaware's 1st Senate district
• District 1 (disambiguation)
• Florida's 1st Senate district
• Georgia's 1st Senate district
• Indiana's 1st Senate district
• Iowa's 1st Senate district
• Kansas's 1st Senate district
• Massachusetts Senate's 1st Middlesex district
• Michigan's 1st Senate district
• Nevada's 1st Senate district
• New York's 1st State Senate district
• Oregon's 1st Senate district
• Poland's 1st Senate district
• Tennessee's 1st Senate district
• Utah's 1st State Senate district
• Virginia's 1st Senate district
• West Virginia's 1st Senate district
• Wisconsin's 1st Senate district