McCarthy (also spelled MacCarthy or McCarty) may refer to:

• MacCarthy dynasty, a Gaelic Irish clan
• McCarthy, Alaska, United States
• McCarty, Missouri, United States
• McCarthy Road, a road in Alaska
• McCarthy (band), an indie pop band
• Château MacCarthy, a Bordeaux wine
• McCarthy Tétrault, a Canadian law firm
• McCarthy evaluation, programming-language semantics also called short-circuit evaluation
• McCarty Creek, a stream in Missouri, United States
• McCarthy Scales of Children's Abilities, a psychological test given to young children
• McCarthy-Dundon, an Irish roadman gang
• MacCarthy Island, island on Gambia River, in eastern Gambia

• McCarthy (surname)

• McCarthyism, a practice of making accusations, named after U.S. Senator Joseph McCarthy