O'Rahilly
O'Rahilly is the shape of the originally anglisierte patronymic formed Irish surname Ó Rathaille meaning "descendant of Rathaille".
Name bearer
- Michael Joseph O'Rahilly , known as The O'Rahilly (1875-1916), Irish nationalist
- Ronan O'Rahilly (1940-2020) Irish businessman
- Stephen O'Rahilly (* 1958), Irish-British biochemist and endocrinologist
- Thomas Francis O'Rahilly (1883–1953), Irish linguist