This is a list of IBF world champions, showing every world champion certificated by the International Boxing Federation (IBF). The IBF is one of the four major governing bodies in professional boxing, and has certified world champions in 17 different weight classes since 1983.
Boxers who won the title but were stripped due to the title bout being overturned to a no contest are not listed.
| Current champion | |
| Most consecutive title defenses |