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The list of ship commissionings in 1918 is a chronological list of ships commissioned in 1918. In cases where no official commissioning ceremony was held, the date of service entry may be used instead.
| Date | Operator | Ship | Pennant | Class and type | Notes |
|---|---|---|---|---|---|
| March 25 |  United States Navy | A. G. Prentiss | ID-2313 | Tugboat | civilian tug delivered to Navy service under charter [1] |
| April 6 | United States Navy | Fairfax | Destroyer No. 93 | Wickes-class destroyer | |
| April 16 | United States Navy | Akela | SP-1793 | Section patrol craft | |
| April 16 | United States Navy | Little | Destroyer No. 79 | Wickes-class destroyer | |
| April 18 | United States Navy | Arroyo | SP-197 | Section patrol craft | |
| April 26 | United States Navy | Kimberly | Destroyer No. 80 | Wickes-class destroyer | |
| May 15 | United States Navy | Sigourney | Destroyer No. 81 | Wickes-class destroyer | |
| May 20 | United States Navy | New Mexico | BB-40 | New Mexico-class battleship | |
| May 24 | United States Navy | Stevens | Destroyer No. 86 | Wickes-class destroyer | |
| May 29 | United States Navy | Avenger | SP-2646 | Section patrol craft | |
| June 1 | United States Navy | Gregory | Destroyer No. 82 | Wickes-class destroyer | |
| June 1 | United States Navy | Taylor | Destroyer No. 94 | Wickes-class destroyer | |
| June 8 | United States Navy | Israel | Destroyer No. 98 | Wickes-class destroyer | |
| June 13 | United States Navy | Colhoun | Destroyer No. 85 | Wickes-class destroyer | |
| June 24 | United States Navy | Rathburne | Destroyer No. 113 | Wickes-class destroyer | |
| June 29 | United States Navy | Luce | Destroyer No. 99 | Wickes-class destroyer | |
| July 1 | United States Navy | Dyer | Destroyer No. 84 | Wickes-class destroyer | |
| July 2 | United States Navy | Stringham | Destroyer No. 83 | Wickes-class destroyer | |
| July 4 | United States Navy | Maury | Destroyer No. 100 | Wickes-class destroyer | |
| July 17 |  Imperial German Navy | Oswald | FS III | Converted merchant type seaplane carrier | |
| July 20 | United States Navy | Talbot | Destroyer No. 114 | Wickes-class destroyer | |
| July 21 | United States Navy | Lansdale | Destroyer No. 101 | Wickes-class destroyer | |
| July 26 | United States Navy | Montgomery | Destroyer No. 121 | Wickes-class destroyer | |
| July 31 | United States Navy | Bell | Destroyer No. 95 | Wickes-class destroyer | |
| July 31 | United States Navy | Wickes | Destroyer No. 75 | Wickes-class destroyer | |
| August 4 | United States Navy | Mahan | Destroyer No. 102 | Wickes-class destroyer | |
| August 8 | United States Navy | Waters | Destroyer No. 115 | Wickes-class destroyer | |
| August 14 | United States Navy | Arabia | ID-3434 | Section patrol craft | |
| August 16 | United States Navy | Stribling | Destroyer No. 96 | Wickes-class destroyer | |
| August 18 | United States Navy | Lamberton | Destroyer No. 119 | Wickes-class destroyer | |
| August 21 | United States Navy | Murray | Destroyer No. 97 | Wickes-class destroyer | |
| August 24 | United States Navy | Philip | Destroyer No. 76 | Wickes-class destroyer | |
| September 7 | United States Navy | McKee | Destroyer No. 87 | Wickes-class destroyer | |
| September 9 | United States Navy | Dent | Destroyer No. 116 | Wickes-class destroyer | |
| September 16 | United States Navy | Dorsey | Destroyer No. 117 | Wickes-class destroyer | |
| September 20 | United States Navy | Schley | Destroyer No. 103 | Wickes-class destroyer | |
| September 30 | United States Navy | Radford | Destroyer No. 120 | Wickes-class destroyer | |
| September 30 | United States Navy | Woolsey | Destroyer No. 77 | Wickes-class destroyer | |
| October 1 |  Royal Netherlands Navy | M 3 | M 3 | M-class minesweeper | |
| October 1 | Royal Netherlands Navy | M 4 | M 4 | M-class minesweeper | |
| October 2 | United States Navy | Lea | Destroyer No. 118 | Wickes-class destroyer | |
| October 11 | United States Navy | Evans | Destroyer No. 78 | Wickes-class destroyer | |
| October 19 | United States Navy | Robinson | Destroyer No. 88 | Wickes-class destroyer | |
| October 23 | United States Navy | Breese | Destroyer No. 122 | Wickes-class destroyer | |
| October 31 | Royal Netherlands Navy | M 1 | M 1 | M-class minesweeper | |
| November 11 | United States Navy | Champlin | Destroyer No. 104 | Wickes-class destroyer | |
| November 14 | United States Navy | Ringgold | Destroyer No. 89 | Wickes-class destroyer | |
| November 25 | United States Navy | Mugford | Destroyer No. 105 | Wickes-class destroyer | |
| November 29 | United States Navy | Gamble | Destroyer No. 123 | Wickes-class destroyer | |
| December 3 | Royal Netherlands Navy | M 2 | M 2 | M-class minesweeper | |
| December 12 | United States Navy | Chew | Destroyer No. 106 | Wickes-class destroyer | |
| December 23 | United States Navy | Ludlow | Destroyer No. 112 | Wickes-class destroyer | |
| unknown date | United States Navy | Ahdeek | SP-2589 | Section patrol craft | Loaned to Culver Naval School 1919 |