# List of ship decommissionings in 1919

The list of ship decommissionings in 1919 includes a chronological list of ships decommissioned in 1919. In cases where no official decommissioning ceremony was held, the date of withdrawal from service may be used instead.
| Date | Operator | Ship | Pennant | Class and type | Fate and other notes |
| January 2 | United States Navy | Anton Dohrn | SP-1086 | Section patrol craft | Returned to pre-World War I owner |
| January 17 | United States Navy | Akbar | SP-599 | Section patrol craft | Sold |
| January 21 | Imperial German Navy | Glyndwr | | Converted merchant-type auxiliary hulk | Surrendered to the United Kingdom; Became SS Akenside |
| January 29 | United States Navy | Aloha | SP-317 | Section patrol craft | Returned to pre-World War I owner and scrapped in 1938 |
| January | United States Navy | Arvilla | SP-752 | Section patrol craft | Returned to pre-World War I civilian owner |
| February 27 | United States Navy | Arval | SP-1045 | Section patrol craft | Returned to pre-World War I civilian owner |
| March 12 | United States Navy | Amagansett | SP-693 | Section patrol craft/minesweeper | Returned to pre-World War I owner |
| March 27 | United States Navy | Audwin | SP-451 | Section patrol craft | transferred to United States Coast and Geodetic Survey until sold in 1927 |
| March 28 | United States Navy | Almax II | SP-268 | Section patrol craft | Transferred to United States Coast and Geodetic Survey until returned to United States Navy and sold 1920 |
| March 31 | United States Navy | Iowa | BB-4 | Battleship | Used as a target ship |
| April 28 | United States Navy | Alacrity | SP-206 | Section patrol craft | Returned to pre-World War I owner until returned to service as USCGC Blanchard 1942–1943 |
| May 5 | United States Navy | Artemis | SP-593 | Section patrol craft | Sold 1920; Burned and sank 1927 |
| May 7 | United States Navy | Arcturus | SP-182 | Section patrol craft | Sold |
| May 7 | United States Navy | Atlantis | SP-40 | Section patrol craft | Sold |
| May 12 | United States Navy | Arcady | SP-577 | Section patrol craft | Sold |
| May 17 | United States Navy | SP-729 | SP-729 | Section patrol craft | Transferred to United States Coast Guard |
| July 2 | United States Navy | Aphrodite | SP-135 | Section patrol craft | Returned to pre-World War I owner |
| July 8 | United States Navy | Actus | SP-516 | Section patrol craft | Returned to pre-World War I civilian owner |
| August 2 | United States Navy | Althea | SP-218 | Section patrol craft | Sank 1920 |
| August 12 | United States Navy | Aurore II | SP-460 | Section patrol craft | Sold |
| August 18 | United States Navy | Adelante | SP-765 | Section patrol craft | Sold |
| September 8 | United States Navy | Anderton | SP-530 | Section patrol craft/minesweeper | Returned to pre-World War I owner |
| September | United States Navy | Ameera | SP-453 | Section patrol craft | Sold |
| November 5 | Imperial German Navy | Stuttgart | | Königsberg-class light cruiser | Stricken and surrendered to the United Kingdom as Prize S in 1920 |
| December 12 | United States Navy | A-2 | Submarine Torpedo Boat No. 3 | Plunger-class submarine | ex-Adder; used as a target from 1920 and stricken in 1922 |
| December 12 | United States Navy | A-4 | Submarine Torpedo Boat No. 5 | Plunger-class submarine | ex-Moccasin; used as a target ship and stricken in 1922 |
| December 12 | United States Navy | A-6 | Submarine Torpedo Boat No. 7 | Plunger-class submarine | ex-Porpoise; used as a target ship and stricken in 1922 |
| December 12 | United States Navy | A-7 | Submarine Torpedo Boat No. 8 | Plunger-class submarine | ex-Shark; used as a target ship in 1921 and stricken in 1922 |
| December 18 | Imperial German Navy | Oswald | FS3 | Converted merchant type seaplane carrier | Surrendered to the United Kingdom; Became SS Eian Maru |
| unknown date | United States Navy | Akela | SP-1793 | Section patrol craft | Returned to pre-World War I owner until scrapped 1935 |
| unknown date | United States Navy | Albacore | SP-751 | Section patrol craft | Returned to pre-World War I owner |
| unknown date | United States Navy | Albatross | SP-1003 | Section patrol craft | Returned to pre-World War I owner |
| unknown date | United States Navy | Alpha | SP-586 | Section patrol craft | Sold |
| unknown date | United States Navy | Anado | SP-4555 | Section patrol craft | Returned to pre-World War I owner |
| unknown date | Imperial German Navy | Answald | FS1 | Converted merchant type seaplane carrier | Surrendered to the United Kingdom; Became SS Vulcan City |
| unknown date | Imperial German Navy | Santa Elena | FS2 | Converted merchant type seaplane carrier | Surrendered to the United States; Became SS Santa Elena |