The sievert is the SI unit of radiation dose.
Sievert may also refer to:
- Sievert (name), German given name
- Hans-Heinrich Sievert (1909–1963), German Olympic decathlete
- José Joaquín Chaverri Sievert (born 1949), Cost Rican diplomat
- Paul Sievert (1895–1988), German Olympic racewalker
- Rolf Maximilian Sievert (1896–1966), Swedish medical physicist for whom the SI unit is named