Diehl
- Aaron Diehl
- Alden Diehl
- Alex Diehl
- Alice M. Diehl
- Arthur Diehl
- August Diehl
- Carl Diehl
- Carol Diehl
- Caroline Diehl
- Charles Diehl
- Conrad Diehl
- Dave Diehl
- David Diehl
- Diehl (company)
- Diehl Aerospace
- Diehl DM-41
- Diehl Defence
- Diehl Film
- Diehl Mateer
- Diehl Metall
- Diehls Covered Bridge
- Edith Diehl
- Ella Diehl
- Ernie Diehl
- Ernst Diehl
- Gaston Diehl
- Geoff Diehl
- George Diehl
- George Diehl Homestead
- Guida Diehl
- Guy Diehl
- Hanns Diehl
- Harold S. Diehl
- House of Diehl
- Huston Diehl
- Jackson Diehl
- James Diehl
- John Diehl (American football)
- John Diehl (actor)
- John Diehl (politician)
- Karl Diehl (economist)
- Karl Ludwig Diehl
- Mekayla Diehl
- Oscar C. Diehl House
- Philip Diehl (inventor)
- Philip N. Diehl
- Phillip Diehl
- Pony Diehl
- Renee Diehl
- Richard Diehl
- Sarah Diehl
- Terry Diehl
- USNS Walter S. Diehl (T-AO-193)
- Volker Diehl
- Wally Diehl
- Walter Stuart Diehl
- William Diehl
- William J. Diehl
- William Webster Diehl