Tierney \ti(er)-ney\ as a girl's name (also used as boy's name Tierney), is of Irish and Gaelic origin, and the meaning of Tierney is "lord". Unusual surname, though made familiar by Gene Tierney's fame.

Tierney has 3 variant forms: Tiernan, Tierneigh and Tiernie.

Baby names that sound like Tierney are Tirrien and Tirien.