U.S. Civil War - U.S. Navy
- Rank: Master-at-Arms
- Conflict/Era: U.S. Civil War
U.S. Ironclad Chickasaw
- Military Service Branch: U.S. Navy
- Medal of Honor Action Date: August 5, 1864
- Medal of Honor Action Place: Fort Morgan, Mobile Bay, Alabama, USA
Served as master-at-arms on board the U.S. Ironclad Chickasaw, Mobile Bay, 5 August 1864. Although his enlistment was up, Seanor volunteered for the battle of Mobile Bay, going on board the Chickasaw from the Vincennes where he carried out his duties gallantly throughout the engagement which resulted in the capture of the rebel ram Tennessee.