- DOU stands for Diário Oficial da União (Brazilian official press)
- DOU stands for Definitive Observation Unit (healthcare)
- DOU stands for Direct Observation Unit (hospital)
- DOU stands for Degree of Unsaturation (organic chemistry)
- DOU stands for Direction des Oeuvres Universitaires (French: Management of Academic Works; Algeria)
- DOU stands for Documents Of Understanding
- DOU stands for Day of Use
- DOU stands for Demons of the Underworld (gaming clan)
- DOU stands for Data Object Unprocessed
DOU