Zlatko Boško Tešanović (August 1, 1956 – July 26, 2012) was a Yugoslav-American theoretical condensed-matter physicist, whose work focused mainly on the high-temperature superconductors (HTS) and related materials.

His particular research interests were in the areas of theoretical condensed matter physics, revolving primarily around iron- and copper-based high-temperature superconductors, quantum Hall effects (QHE), superconductivity and strongly correlated electron materials.

His broad knowledge of condensed matter physics, his deep understanding of the effects of strong magnetic fields, and his talent for exposition were influential.

He served as a member of the committee to Assess the Current Status and Future Direction of High Magnetic Field Science in the United States, and contributed strongly to it, until his death.

He has authored and published more than 125 scientific papers, and a book entitled:[2][4] He received grants from the Department of Energy, and the National Science Foundation awarded him a post-doctoral fellowship that enabled him to spend two years studying at Harvard University.