IBL may refer to:
Technology
International Brain Laboratory, a collaborative research group in neuroscience Image-based lighting, an image rendering technique Inbred backcross lines, a breeding technique InBound Links, a metric used by search engines Instance-based learning, a family of machine learning algorithms (e.g. KNN, PEL-C, IBL-1, IBL-2 and IBL-3) Indigo Bay Lodge Airport, an airport in Mozambique (IATA code IBL) Ion beam lithography, a microfabrication technique
Sports
Indonesian Basketball League, formerly called the National Basketball League Indian Badminton League Intercounty Baseball League, a baseball league in Canada International Basketball League (1999–2001), basketball league in the United States International Basketball League (2005–2014), a basketball league in the United States Italian Baseball League Israel Baseball League
Other
In before lock, an Internet slang Inquiry-based learning, a teaching method International Brotherhood of Longshoremen, a labor union in North America Industrial Bus Lines, an American bus company