Diedrich H. Westermann
German missionary, Africanist, and linguist

- Born: 1875-06-24 (Baden, Lower Saxony)
- Died: 1956-05-31 (Baden, Lower Saxony)
- Country of citizenship: Germany
- Occupation: linguist; missionary; university teacher
- Member of: Royal Prussian Academy of Sciences
- Employer: Humboldt University of Berlin; North German Missionary Society
- VIAF ID: https://viaf.org/viaf/2516329
- ISNI: https://isni.org/isni/0000000121179511
- WorldCat Identities ID: https://worldcat.org/identities/lccn-n79102835
- Library of Congress authority ID: https://id.loc.gov/authorities/names/n79102835