Obliteration by incorporation, a concept in sociology of science: when a discovery, or a theory, is no longer directly attributed to its author because it is considered common knowledge
Ontology for Biomedical Investigations, an international cross-domain ontology effort
Operation Blessing International
Optical Borehole Imaging, a system to visually inspect and record images of the walls of a borehole, detecting breakouts and investigating the stratigraphy, or the structure, of the rock in sedimentary, or igneous, geological formations
Oracle Business Intelligence Suite Enterprise Edition, software owned by Oracle Corporation
Order of British India
Orion Bus Industries, formerly Ontario Bus Industries, a bus manufacturer
Our Boys Institute, a junior chapter of the YMCA in Adelaide, South Australia
Obi (publishing), an informational piece of paper or cardboard folded around or over a book or LP record, music CD, video game, or magazine, used in Japan
Obi (band), a British indie music band from the early 2000s