Ćosić is a Bosnian, Croatian and Serbian surname. It may refer to:

See also

References

OSI may refer to:

Places

Companies

Government

The Osi or Osii were an ancient tribe dwelling beyond the Quadi, in a woody and mountainous country. But their national customs, as well as their language, were those of the Pannonians. They were, moreover, tributary to the Quadi and Sarmatae. The exact districts they inhabited cannot be determined, nor do we know whether they had migrated into Germany from Pannonia, or whether they were an ancient remnant of Pannonians in those districts.

The ethnicity of the Osi is a matter of debate: some claim they were Germanic, others Celtic, others Dacian.

References

 This article incorporates text from a publication now in the public domain: Smith, William, ed. (1854–1857). "Osi". Dictionary of Greek and Roman Geography. London: John Murray.