DOI or Doi may refer to:
Science and technology
- Digital object identifier, an international standard for document identification
- Distinctness of image, a quantification of vision used in optics
- 2,5-Dimethoxy-4-iodoamphetamine, a hallucinogenic drug
Organizations
- Division of Investigation, a precursor to the U.S. Federal Bureau of Investigation
- New York City Department of Investigation, law enforcement agency
- United States Department of the Interior, an executive department of the U.S. government
Other uses
- Doi (surname), a Japanese surname
- Doi (retailer), a Japanese company
- Dogri language (ISO 639 code), spoken in India and Pakistan
See also
- All pages beginning with "Doi"