Look up OOD in Wiktionary, the free dictionary.
Ood or OOD may refer to:
- Ood, a fictional alien species from Doctor Who
- Ood, the name of a prophet in The Gods of Pegāna by Lord Dunsany
- ood, ISO 639-3 code for the Oʼodham language
- Officer of the day, at military installations
- Officer of the deck, in the US Navy and Coast Guard
- Object-oriented design, in software