0B

0B (zero B) or 0-B may refer to:

Science and technology

 * Type 0B string theory, a variant of Type 0 string theory
 * Binary numeral system (prefix: 0B)
 * Zero-based numbering, numbering in which the initial element of a sequence is assigned the index 0
 * Zero-based array, an array data type in computer science

Other uses

 * Zero-based budgeting, a technique of planning and decision-making which reverses the working process of traditional budgeting
 * Blue Air (former IATA code: 0B), a former Romanian low-cost airline
 * Turret 0B, a point on Hadrian's Wall associated with Milecastle 0