The list of ship decommissionings in 1899 is a chronological list of ships decommissioned in 1899. 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 1899 instead.
| Date | Operator | Ship | Pennant | Class and type | Fate and other notes | Ref |
|---|---|---|---|---|---|---|
| January | Gerona | – | Floating jetty/depot ship | Ex-screw frigate; hulked since 1895; sold for scrap 1901 | [1] | |
| Unknown date | Almansa | – | Floating jetty | Ex-screw frigate; hulked since 1894; decommissioned and sold for scrap in either 1899, [2] 1900, [3] or 1901 [4] (according to different sources) | ||
| Unknown date | USS Sangamon | – | Passaic-class monitor | Sold for scrap in 1905 | [5] |