- Birth nameCharles McHugh O'Donnell
- Charlie O'Donnell is known for NCIS: Los Angeles (2009), Celebrity Family Feud (2008) and Hollywood's Private Home Movies (1983).
- Parents
- RelativesLily O'Donnell(Sibling)Finley O'Donnell(Sibling)Maeve O'Donnell(Sibling)
- Son of Chris O'Donnell and Caroline O'Donnell.
- Grandson of Julia O'Donnell.
- Played the young Callen, his father's character in NCIS: Los Angeles (2009), in the episode Past Lives (2010).
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