The Intelligence-Security Agency of BiH, commonly known by its acronym OSA-OBA BiH, is the primary intelligence agency of Bosnia and Herzegovina.

It was established by the Bosnian Parliament in March 2004.

Its Head is appointed and dismissed by the President of the Republic on the advice of the Prime Minister.

OSA operates within this context and while it has been identified as being "generally under effective civilian control" (U.S. Department of State, 2004) the agency has still been associated with various abuses within the country and continues to play a significant role in domestic politics.

The Bosnian government has received support from the U.S. and European countries in working to establish or reform national institutions, including its intelligence and security services.