Justin McCarthy
Justin McCarthy is the name of the following people:
- Justin McCarthy (politician) (1830–1912) Irish journalist, writer, historian and politician
- Justin McCarthy (ice hockey player) (1899–1976), American ice hockey player
- Justin A. McCarthy (* 1945), American historian and university professor
- Justin Huntly McCarthy (1860–1936) Irish politician and writer
- Justin Joseph McCarthy (1900-1959), Bishop of Camden