McCarthy is a popular surname that originated in Ireland. Some common searches for this name include:
- Joseph McCarthy, US Senator, 1908-1957 (also see McCarthyism)
- John McCarthy (computer scientist), 1927-
- Eugene McCarthy, US Congressman and Senator, 1916-
- Mick McCarthy, football player and manager, 1959-
- Andrew McCarthy, actor, 1962-
- Cormac McCarthy, novelist, 1933-
- Charlie McCarthy, celebrated wooden puppet and sidekick to Edgar Bergen, 1903-1978
- McCarthy, Alaska, population 42