Cormac McCarthy was an American author (1933–2023).
Cormac McCarthy also may refer to:
- Other Americans:
- Cormac McCarthy (musician) (born c. 1950)
- Line of and from ancient Irish leaders:
- Cormac mac Airt (fl. 2nd, 3rd, or 4th cen.)
- Cormac Laidir MacCarthy, Lord of Muscry and in 1446 re-builder of Blarney Castle
- Cormac Mac Cárthaigh (died 1138)
- Various monarchs of Desmond, and claimants to that line, in 12th to 21st centuries