What does Tierney mean?
Tierney \ti(er)-ney\ as a girls' name (also used as boys' 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 is an unusual given name for females but a very prominent surname for both adults and children (#2491 out of 150436, Top 2%). (2000 U.S. Census)
Shown below is the baby name popularity of Tierney for girls. Tierney has yet to be listed in the Top 1000 so far. (2014 Birth Statistics)