Dib, dib or DIB may stand for:

• Danish International Brigade, a Danish military brigade
• Deutscher Imkerbund, umbrella organization of German beekeepers
• Director of Intelligence Bureau (India), head of the premier intelligence agency of India
• Diyanet İşleri Başkanlığı, the highest Islamic religious authority in Turkey
• Dubai Islamic Bank, an Islamic bank based in Dubai, United Arab Emirates

• Device Interface Board, a component of electronic Automatic Test Equipment
• Diffuse interstellar band, an astronomical spectroscopy term
• Dry ice bomb, a bomb-like device chiefly in non-military/recreational use
• Difficulty in breathing, medical jargon/shorthand
• Device-independent bitmap, a possible file extension of the Windows Bitmap raster graphics format
• Dual independent bus, a computer hardware feature
• Droplet Interface Bilayer, a lipid droplet the forms a bio-membrane at an interface

• Dib (name), several people with the given name and surname

• Defense industrial base, a political science and military industry term
• Dib Membrane, a character from the animated television series Invader Zim
• Dibrugarh Airport, Assam, India (IATA code: DIB)
• Dictionary of Irish Biography
• Disability Insurance Benefits, a Title II benefit offered by the US Social Security Administration
• Dib, a variety of the Yelmek language of Papua New Guinea

• Deeb