NFB

• NF-κB, in molecular biology, often written as NF-B
• Neurofeedback, therapy technique that presents the user with realtime feedback on brainwave activity

• National Federation of the Blind, American non-profit organization
• National Federation of Builders, British trade association
• National Film Board of Canada, Canada's public film producer and distributor
• Network of Excellence for Functional Biomaterials, research centre based in Galway, Ireland
• New Football Federations-Board, Non-FIFA football representative organisation

• Negative feedback, process of feeding back to the input a part of a system's output, so as to reverse the direction of change of the output
• Noise from the Basement, debut album by Canadian singer Skye Sweetnam
• North Fork Bank, which was acquired by Capital One Bank in 2008

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