This is a list of warship classes built for the Romanian Navy that served during the Second World War.
 Regele Ferdinand
| |
| Class overview | |
|---|---|
| Name | Regele Ferdinand-class destroyer |
| Builders | Pattison, Naples |
| Operators | |
| Preceded by | Vifor-class destroyer |
| Built | 1928-1930 |
| In commission | 1930-1960's |
| Planned | 4 |
| Completed | 2 |
| Cancelled | 2 |
| Retired | 2 |
 Mărăști
| |
| Class overview | |
|---|---|
| Name | Vifor-class destroyer |
| Builders | Pattison, Naples |
| Operators | |
| Succeeded by | Regele Ferdinand class |
| Built | 1913-1918 |
| In commission | 1917-1965 |
| Planned | 12 |
| Completed | 4 |
| Cancelled | 8 |
| Retired | 4 |
 Constanța
| |
| Class overview | |
|---|---|
| Name | Constanța-class submarine tender |
| Builders | Pattison, Naples |
| Operators | |
| Built | 1927-1931 |
| In commission | 1931-1977 |
| Planned | 1 |
| Completed | 1 |
| Retired | 1 |
.jpg) Amiral Murgescu
| |
| Class overview | |
|---|---|
| Name | Amiral Murgescu-class minelayer/destroyer escort |
| Builders |
|
| Operators | |
| Preceded by | Alexandru cel Bun-class minelayer |
| Built | 1938-1941 |
| In commission | 1941-1988 |
| Planned | 4 |
| Completed | 2 |
| Retired | 2 |
 Mircea
| |
| Class overview | |
|---|---|
| Name | Mircea-class gunboat |
| Builders | Thames Iron Works, London |
| Operators |  Romanian Naval Forces |
| Built | 1882 |
| In commission | 1882-1944 |
| Completed | 1 |
| Lost | 1 |
 Vântul
| |
| Class overview | |
|---|---|
| Name | Vedenia-class motor torpedo boat |
| Builders | Galați shipyard, Romania |
| Operators | Romanian Naval Forces |
| Built | 1939-1943 |
| In commission | 1943-1954? |
| Completed | 6 |
| Retired | 6 |
 Delfinul
| |
| Class overview | |
|---|---|
| Name | Delfinul-class submarine |
| Builders | Italian naval base and shipyard, Fiume |
| Operators | |
| Built | 1927-1931 |
| In commission | 1936-1957 |
| Planned | 2 |
| Completed | 1 |
| Retired | 1 |
 Rechinul and Marsuinul
| |
| Class overview | |
|---|---|
| Name | Marsuinul-class submarine |
| Builders | Galați shipyard, Romania |
| Operators | |
| Built | 1938-1943 |
| In commission | 1943-1967 |
| Planned | 3 |
| Completed | 2 |
| Lost | 1 |
| Retired | 1 |
 Mihail Kogălniceanu
| |
| Class overview | |
|---|---|
| Name | Mihail Kogălniceanu-class river monitor |
| Builders |
|
| Operators | |
| Built | 1907 |
| In commission | 1907-1950's |
| Planned | 8 |
| Completed | 4 |
| Lost | 2 |
| Retired | 2 |