List of ship commissionings in 1918
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 | ' | ID-2313 | Tugboat | civilian tug delivered to Navy service under charter | |
| April 6 | ' | Destroyer No. 93 | |||
| April 16 | ' | SP-1793 | Section patrol craft | ||
| April 16 | ' | Destroyer No. 79 | |||
| April 18 | ' | SP-197 | Section patrol craft | ||
| April 26 | ' | Destroyer No. 80 | |||
| May 15 | ' | Destroyer No. 81 | |||
| May 20 | ' | BB-40 | |||
| May 24 | ' | Destroyer No. 86 | |||
| May 29 | ' | SP-2646 | Section patrol craft | ||
| June 1 | ' | Destroyer No. 82 | |||
| June 1 | ' | Destroyer No. 94 | |||
| June 8 | ' | Destroyer No. 98 | |||
| June 13 | ' | Destroyer No. 85 | |||
| June 24 | ' | Destroyer No. 113 | |||
| June 29 | ' | Destroyer No. 99 | |||
| July 1 | ' | Destroyer No. 84 | |||
| July 2 | ' | Destroyer No. 83 | |||
| July 4 | ' | Destroyer No. 100 | |||
| July 17 | ' | FS III | Converted merchant type seaplane carrier | ||
| July 20 | ' | Destroyer No. 114 | |||
| July 21 | ' | Destroyer No. 101 | |||
| July 26 | ' | Destroyer No. 121 | |||
| July 31 | ' | Destroyer No. 95 | |||
| July 31 | ' | Destroyer No. 75 | |||
| August 4 | ' | Destroyer No. 102 | |||
| August 8 | ' | Destroyer No. 115 | |||
| August 14 | ' | ID-3434 | Section patrol craft | ||
| August 16 | ' | Destroyer No. 96 | |||
| August 18 | ' | Destroyer No. 119 | |||
| August 21 | ' | Destroyer No. 97 | |||
| August 24 | ' | Destroyer No. 76 | |||
| September 7 | ' | Destroyer No. 87 | |||
| September 9 | ' | Destroyer No. 116 | |||
| September 16 | ' | Destroyer No. 117 | |||
| September 20 | ' | Destroyer No. 103 | |||
| September 30 | ' | Destroyer No. 120 | |||
| September 30 | ' | Destroyer No. 77 | |||
| October 1 | ' | M 3 | |||
| October 1 | ' | M 4 | |||
| October 2 | ' | Destroyer No. 118 | |||
| October 11 | ' | Destroyer No. 78 | |||
| October 19 | ' | Destroyer No. 88 | |||
| October 23 | ' | Destroyer No. 122 | |||
| October 31 | ' | M 1 | |||
| November 11 | ' | Destroyer No. 104 | |||
| November 14 | ' | Destroyer No. 89 | |||
| November 25 | ' | Destroyer No. 105 | |||
| November 29 | ' | Destroyer No. 123 | |||
| December 3 | ' | M 2 | |||
| December 12 | ' | Destroyer No. 106 | |||
| December 23 | ' | Destroyer No. 112 | |||
| unknown date | SP-2589 | Section patrol craft | Loaned to Culver Naval School 1919 |