Tigernach

Tigernach, an early Irish personal name, may refer to:


 * Tigernach of Clones (d. 549), patron saint of Clones
 * Tigernach mac Fócartai (d. 865), king of Lagore (south Brega)
 * Tigernach Ua Braín (d. 1088), abbot of Clonmacnoise and Roscommon, putative author of the Annals of Tigernach
 * Tigernach Ua Máel Eóin (d. 1172), abbot of Clonmacnoise