D
- Daevid Allen (born 1938 as Christopher David Allen), Australian musician, founder of Soft Machine and Gong
- Damon E. Allen (1921–2009), Kentucky optometrist
- Dan Allen, several people
- Darina Allen (born 1951), Irish chef
- David Allen, several people
- Dayton Allen (1919–2004), American comedian and voice actor
- Debbie Allen (born 1950), American actress and television director/producer
- Deborah Allen (born 1953), American country music singer
- Dennis Allen (1939–1995), English footballer
- Dick Allen (born 1942), former Major League Baseball first baseman/third baseman
- Donna Allen, American dance pop singer
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