List of ship commissionings in 1861
The list of ship commissionings in 1861 is a chronological list of ships commissioned in 1861. 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 |
| 6 September | ' | – | screw frigate | ||
| Unknown date | ' | – | Bark | commissioned at New York Navy Yard with Acting Master Newell Graham in command |