IBB may refer to:
Government Ibrahim Badamasi Babangida (born 1941), President of Nigeria from 1985 to 1993 International Broadcasting Bureau, technical support body for the Voice of America and other US government broadcasting services Istanbul Metropolitan Municipality (), the governing body of Istanbul
Scholarly organizations
Ibrahim Badamasi Babangida University, university in Nigeria Institute of Biochemistry and Biophysics, a research institute in Iran Institute of Bioinformatics and Biotechnology, a scientific research institute in Pune, India
Other
Ibb (Arabic: إب), a city in Yemen Indiana Business Bulletin, a business-news website Intentional base on balls, a ploy in baseball International Brotherhood of Boilermakers, Iron Ship Builders, Blacksmiths, Forgers and Helpers, a North American trade union International Brotherhood of Bookbinders, a defunct North American trade union Internet Bug Bounty, a Bug bounty program for Internet-related software ibb, the ISO 639-3 code for the Ibibio language