Ildefons Herwegen
German monk and historian
- Born: 1874-11-27 (Junkersdorf)
- Died: 1946-09-02 (Maria Laach Abbey)
- Country of citizenship: Germany
- Occupation: historian; monk
- Participant in: Hostages Trial (date: 1946-06-08; role: affiant)
- Position held: Abbot of Maria Laach (period: 1913-07-07 through 1946-09-02; replaced by: Basilius Ebel; replaces: Fidelis von Stotzingen); abbot
- VIAF ID: https://viaf.org/viaf/51682817
- ISNI: https://isni.org/isni/0000000083435755
- WorldCat Identities ID: https://worldcat.org/identities/lccn-n88647382
- Library of Congress authority ID: https://id.loc.gov/authorities/names/n88647382