BIF or bif may refer to:
Organisations Benevolence International Foundation, part of al-Qaeda, posing as a charity Brabrand IF, football club playing in the Danish 2nd Division Brøndby IF, football club playing in the Danish Superliga Brynäs IF, ice hockey team from Gävle, Sweden Die BIF, one of the first lesbian magazines
Places Barrow-in-Furness railway station, station code BIF British Industries Fair, Birmingham, England
Science and technology Banded iron formation, a type of rock Bifrenaria, orchid genus Borderline intellectual functioning
Other uses Bif Naked, Canadian musician Burundian franc, by ISO 4217 code