The list of ship decommissionings in 1927 includes a chronological list of ships decommissioned in 1927. 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 1927 instead.
| Date | Operator | Ship | Class and type | Fate and other notes | Ref |
|---|---|---|---|---|---|
| 14 July | USS T-3 | AA-1-class submarine | Ex-AA-3; sold for scrap | [1] | |
| 10 November | HMAS Geranium | Arabis-class sloop | dismantled 1932; sunk as target 1935 | [2] | |
| 28 December | Princesa de Asturias | Princesa de Asturias-class armored cruiser | sold 1929; stricken 1930; scrapped | [3] |