IBB
- Bug bounty program
- Ibb
- Ibrahim Badamasi Babangida
- Ibrahim Badamasi Babangida University
- Indiana Business Bulletin
- Institute of Biochemistry and Biophysics
- Institute of Bioinformatics and Biotechnology
- Intentional base on balls
- International Broadcasting Bureau
- International Brotherhood of Boilermakers, Iron Ship Builders, Blacksmiths, Forgers and Helpers
- International Brotherhood of Bookbinders
- Istanbul