Osanna of Cattaro (Serbo-Croatian Latin: Ozana Kotorska, November 25, 1493 – April 27, 1565) was a Catholic visionary and anchoress from Cattaro (Kotor).
She was a teenage convert from Orthodoxy of Serbian descent from Montenegro (Zeta).
She became a Dominican tertiary and was posthumously venerated as a saint in Kotor.