Fiach

Fiach is an Irish male given name. It may refer to:
 * Saint Fiacc, fifth-century bishop of Sletty in Ireland
 * Fiach McHugh O'Byrne (1534–1597) Irish chief
 * Fiach Mac Conghail (born 1964) Irish theatre director and Senator
 * Fiach Moriarty, Irish singer-songwriter

Similar names

 * Fiacha
 * Fiachra
 * Fiachna