Ib Frederiksen is a former Danish badminton player.

Frederiksen competed at the 1987 IBF World Championships, and he was defeated in the quarterfinals by Yang Yang, of China.

He won the 1988 All England Open Badminton Championships in men's singles beating Jens Peter Nierhoff in the semifinal and Morten Frost in the final 8–15, 15–7, 15–10.

[citation needed] Men's singles The World Badminton Grand Prix was sanctioned by the International Badminton Federation (IBF) from 1983 to 2006.

This biographical article relating to Danish badminton is a stub.