Orsa
# Orsa

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
