| Honorific Prefix: | Lieutenant |
| Charles H. Swasey | |
| Birth Date: | 21 June 1839 |
| Birth Place: | Massachusetts |
| Death Place: | Donaldsonville, Louisiana |
| Placeofburial: | Mount Pleasant Cemetery (Taunton, Massachusetts) |
| Allegiance: | United States of America |
| Serviceyears: | 1854–1862 |
| Rank: | Lieutenant |
| Battles: | American Civil War |
Charles H. Swasey (June 21, 1839-October 4, 1862) was an officer in the United States Navy who was killed in action during the American Civil War.
Born in Massachusetts, Swasey was appointed midshipman on 28 September 1854, and commissioned lieutenant on 31 August 1861. Swasey served aboard in the engagement with the steamer below New Orleans, Louisiana, on 24 April 1862. He then served as executive officer of on the West Gulf Blockading Squadron. Lieutenant Swasey was wounded during an engagement with Confederate forces near Donaldsonville, Louisiana, on 4 October 1862, and died the same day.
He is buried at Mount Pleasant Cemetery in Taunton, Massachusetts.
Two ships have been named in his honor.