Kim Jong-suk (December 24, 1917 – September 22, 1949) was a Korean independence activist and Communist politician. She was North Korean leader Kim Il-sung's first wife and Kim Jong-il's mother.

Kim Jong-suk was born December 24, 1917 to Kim Chun San and Oh Ssi, who were poor farmers in Osan-dong, Hoeryong County, in the North Hamgyong Province of Japanese Korea. In 1922 her family abandoned Korea to live in China. Kim Jong-suk joined the Young Communist League of Korea, led by Kim Il-sung, on July 10, 1932.

Later, on April 25, 1936, she was assigned to the KPRA main unit directly under the command of Kim Il-sung. Kim Jong-suk was formally admitted into the Communist Party on January 25, 1937. Kim Jong-suk gave birth to Kim Jong-il on February 16, 1941 in the Soviet village of Vyatskoye, near Khabarovsk.^{[citation needed]}

On September 22, 1949, Kim Jong-suk died at the age of 31 while giving birth to a stillborn baby girl.

Other unconfirmed reports suggest that she might have been shot and left to bleed to death.