Here are 2 famous actors from South Korea died in 1990:
Choi Nam-Hyeon (January 7, 1919 Chongju-February 25, 1990 Songpa District) a.k.a. Nam-hyeon Choi, Choi Nam-Hyun or Choi Namhyun was a South Korean actor.
Choi Bong (May 25, 1923 Korea-September 1, 1990) also known as Choe Bong or Bong Choi was a South Korean actor.