Kook In-sook

Kook In-sook (born 13 October 1965) is a South Korean rower. She competed in the women's coxed four event at the 1988 Summer Olympics.

Kook attended Kyonggi University. She represented South Korea in rowing at an international friendly competition in Japan in 1985. She won a silver medal in women's coxed four at the 1986 Asian Games with a time of 7:50.57. She competed at the 1990 Asian Games as well.