Liam McCarthy

Liam McCarthy may refer to:


 * Liam McCarthy (hurler) (born 1963), Irish retired hurler
 * Liam McCarthy (cricket) South African-born Irish cricketer
 * Half of the duo of Liam McCarthy and John D. O'Callaghan, Irish school students who won a science award
 * Liam MacCarthy (1853–1928), Gaelic Athletic Association patron