ID

ID or its variants may refer to:

• Identity document, a document used to verify a person's identity

• Idaho, US (postal abbreviation ID)
• Indonesia, ISO 3166-1 alpha-2 country code "ID"
  • Indonesian language, ISO 639-1 language code "ID"

• Batik Air (IATA airline code ID), an airline based in Jakarta, Indonesia
• id Software, an American video game developer

• Infectious disease
• Intellectual disability, a generalized neurodevelopmental disorder
• .id, the Internet Top Level Domain code for Indonesia
• id, the generic object datatype in the Objective-C programming language
• Interior design
• Id, one of the Id, ego and super-ego psychic apparatus

• Indonesian language (ISO 639-1 code "id")
• Intelligent design, a pseudoscientific argument for the existence of God