Publicist Max Clifford has been found guilty of eight indecent assaults on women and girls as young as 15 by a jury at Southwark Crown Court.
The 71-year-old, from Surrey, was found guilty of a string of charges over a period of nearly 20 years.
He was cleared of two charges of indecent assault, while the jury failed to reach a verdict on another charge.
Clifford, who is the first person to be convicted under Operation Yewtree, was bailed and will be sentenced on Friday.
Judge Anthony Leonard QC warned him that the fact he was granted bail was no indication of the sentence that would be passed.
Clifford was arrested by detectives from Operation Yewtree in December 2012, and charged in April the following year.
BBC home affairs correspondent Danny Shaw said the verdicts were "hugely significant" as the first Operation Yewtree conviction.
During the trial, prosecutors portrayed him as a well-practised manipulator, who promised to boost his victims' careers and get them to meet celebrities in exchange for sexual favours.