Letnica may refer to:
- Letnica, Gdańsk, one of the quarters of the city of Gdańsk, Poland
- Letnica, Lubusz Voivodeship, a village in western Poland
- Letnica, West Pomeranian Voivodeship, a village in northwestern Poland
- Letnica, Vitina , a village in the Vitina Municipality of southern Kosovo
- Letnica (river), a river of Poland
See also
edit- Ohrid trout (Salmo letnica), a species of fish
- Letnitsa, a town in northern Bulgaria