Orsa or ORSA may refer to:
Places:
- Orsha or Orša, Belarus
- Orsa, Sweden
- Orsa Municipality, Swedish municipality
Vessels:
- Orsa-class torpedo boat, built for the Italian Navy in the 1930s
- Italian training ship Orsa Maggiore (A5323), a contemporary ocean ketch serving as a sail training vessel
Other uses:
- Orsa (moth), a moth in the family Erebidae
- Operations Research Society of America
- Own Risk and Solvency Assessment, in EU insurance regulation
- Oxacillin-resistant Staphylococcus aureus
This disambiguation page lists articles associated with the title Orsa.
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