According to the varsity officials, NAAC accorded the A+ Grade in the third Cycle of Assessment done last month.
"The A plus status is one notch higher than the 'A' grade status it enjoyed till recently," they said in a release.
The University, celebrating its centenary, is the only educational institution from Telangana to be conferred this status in the third cycle of evaluation, the release claimed.
Osmania University Vice Chancellor, Prof Ramachandram said, "The grading now enhances the academic prestige of the University nationally and globally."
"University officials feel that the A+ grading would refurbish the varsity's image which was dented due to the agitation for a separate statehood", the release said.
Students of Osmania University were in the forefront of agitation for separate state of Telangana.