DII

DII may refer to:

• Days in inventory, an accounting term
• Dii, the Thracian tribe
• DiI, a hydrophobic cyanine dye used in cell biology
• Delegation of the Ismaili Imamat, the Delegation of the Ismaili Imamat
• Diablo II, a sequel to the computer game Diablo
• Division II, a competition level in the National Collegiate Athletic Association (NCAA)
• Defence Information Infrastructure, the UK's secure military communications network
• Dynamic Invocation Interface, part of the CORBA standard

DII may also mean:

• 502 in Roman numerals

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