Kang Chil-ku (Korean: 강칠구; born August 8, 1984), also spelled Kang Chil-gu, is a South Korean ski jumper who has competed since 2001.

Kang finished 30th in the individual event of the 2002 Ski-flying World Championships at Harrachov.

His best World Cup finish was 29th in a large hill event in Finland in 2003.

Kang's lone career victory was in a normal hill event at an FIS Race in Italy in 2003.

This biographical article relating to South Korean ski jumping is a stub.