MIB may refer to:

• Mebibit (Mib), a multiple of the unit bit for digital information
• Mebibyte (MiB), a multiple of the unit byte for digital information
• Management information base, a computing information repository used by the Simple Network Management Protocol
• Modular infotainment platform vehicle infotainment architecture
• Man-in-the-browser attack

The mebibyte is a multiple of the unit byte for digital information. The binary prefix mebi means 2²⁰, therefore one mebibyte is equal to . The unit symbol for the mebibyte is MiB.