A South Korean court on Friday found Oh Young-soo, an actor who won a Golden Globe for his portrayal of a contestant in the Netflix survival drama “Squid Game,” guilty of indecent assault.

Mr. Oh, 79, was given an eight-month suspended sentence and ordered to attend 40 hours of classes on sexual violence. The verdict and sentencing were announced on Friday at a district court in Seongnam, a city southeast of Seoul.

Many of the hearings in the case had been closed to the public. Mr. Oh had publicly denied the charge.

Prosecutors charged Mr. Oh in 2022 after an actress filed a complaint accusing him of inappropriately touching her while the two were on tour for a play in 2017. She was not identified.

The charge carried a potential prison sentence of up to 10 years or a fine of up to 15 million South Korean won, or about $11,400. But prosecutors said last month that they would seek a one-year sentence and an employment ban if he were to be convicted.

A few months before he was charged, Mr. Oh became the first South Korean to win a Golden Globe, for best supporting actor for his role as Player No. 001 in “Squid Game,” a dystopian drama about people who risk their lives in a secretive contest in hopes of winning a fortune. He was also nominated for a 2022 Emmy for his performance on the show, still the most watched series ever on Netflix.