Kim In-Sub (Korean: 김인섭; RR: Kim In-seop; born March 2, 1973, in Daegu, South Korea) is a retired Korean Greco Roman wrestler.

He won two gold medals and one silver medal at the 1998, 1999 and 2001 FILA Wrestling World Championships.

In the 2000 Summer Olympics in Sydney, Australia, Kim earned a silver medal.

He also competed at the 2004 Athens Olympics, but did not win a medal.

This biographical article relating to a South Korean sport wrestler or wrestling coach is a stub.