| Corvette lieutenant | |
| Country: | See gallery |
| Service Branch: | Navies |
| Rank Group: | Junior officer |
| Nato Rank: | OF-1 |
| Higher Rank: | Frigate lieutenant |
| Equivalents: | Ensign (Anglophone) |
Corvette lieutenant is a rank in some navies, especially those of Spain and Latin America, roughly equivalent to a Royal Navy acting sub-lieutenant or a US Navy ensign.