Bozana Trninić was born in 1963 in Banja Luka, where she finished elementary and secondary economics school.
She graduated at the Faculty of Economics in Banja Luka in 1988.
Certificates for professional-expert knowledge of certified accountant and certified auditor acquired in 2005.
From May 1988 to March 1991, she worked on the plans and analyzes in the Laktaši Municipal Assembly (May – November 1988) and the Fabric of special devices ” Rudi Čajavec ” (November 1988 – March 1991).
From September 1993 to April 1999, she worked in the NIO ” Institute of Protection and Ecology ” as the head of the accounting department.
From May 1999 to April 2002, she worked in ZDP Petrol PC Banja Luka as head of the economic and financial sector.
From April 2002 to July 2008 she worked as the Audit Team Leader at the Supreme Office for the Republic of Srpska Public Sector Auditing.
In June 2008, it was appointed by the Decision of the Parliamentary Assembly of Bosnia & Herzegovina to serve as the Deputy Auditor General at the Audit Office of the Institutions of Bosnia and Herzegovina, and performed this function in the period from July 2008 in the middle of December 2015.
From April 2016 to end March of 2018 she worked in the Postal Services Agency a.d. Banja Luka as Executive Director for Economic and Accounting Affairs.
By the decision of the National Assembly of the Republic of Srpska of March 2018, he was appointed as Deputy Auditor General at the Supreme Office for the Republic of Srpska Public Sector Auditing.
She is married and has two children.