The list of ship decommissionings in 1877 is a chronological list of ships decommissioned in 1877. In cases where no official decommissioning ceremony was held, the date of withdrawal from service may be used instead. For ships lost at sea, see list of shipwrecks in 1877 instead.
| Date | Operator | Ship | Pennant | Class and type | Fate and other notes |
|---|---|---|---|---|---|
| January 13 | USS Potomac | – | Raritan-class frigate | Sold | |
| January 22 | USS Shawmut | – | Steamship | Sold | |
| June 1 | USS Dictator | – | Monitor | Sold | |
| October 8 | USS Saugus | – | Canonicus-class monitor | Laid up at Washington Navy Yard; condemned in 1886; sold in 1891 [1] | |
| October 31 | USS Frolic | – | Sidewheel paddle steamer | ex-USS Advance; sold | |
| Unknown date | Berenguela | – | Petronila-class screw frigate | Hulked as floating dock since 1875 [2] [3] | |
| Unknown date | USS Canonicus | – | Canonicus-class monitor | To reserve; sold in 1908 [4] | |
| Unknown date | USS Catskill | – | Passaic-class monitor | Decommissioning may have been in early 1878; to reserve; recommissioned in 1898 [5] |