- Daniel J. Bernstein (born 1971), American mathematician.
- Daniel J. Bernstein (businessman) (1918–1970), American businessman and left-wing political activist, creator of the DJB Foundation
- Danny Julian Boggs (born 1944), US Sixth Circuit Judge
- Derek John Blundell (born 1933), British geologist
Science and technology
- Duodenal-Jejunal Bypass, a form of diabetes management
|This disambiguation page lists articles associated with the title DJB.
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