The list of ship commissionings in 1900 includes a chronological list of all ships commissioned in 1900.
| Date | Operator | Ship | Flag | Class and type | Pennant | Other notes |
|---|---|---|---|---|---|---|
| 13 February | ||||||
| 20 February | BB-5 | |||||
| 20 February | [1] | |||||
| 27 March | ||||||
| 1 April | Armoured cruiser | |||||
| 15 May | BB-6 | |||||
| 29 May | New Orleans-class protected cruiser | CL-23 | ||||
| 25 June | ||||||
| 1 September | ||||||
| 20 September | ||||||
| 16 October | BB-8 | |||||
| 1 November | ||||||