Uppercross (Irish: An Chrois Uachtarach) is a historical barony in southern County Dublin, Ireland.

[2][3] The placename derives from "Crosslands" (Latin: Croceae), a term applied to lands that were owned by the Catholic Church.

County Dublin's crosslands were divided into two portions, designated Nethercross and Upper Cross.

[4] The Uí Ceallaig Cualann ruled Uppercross prior to the Norman invasion.

It is bound to the south by the County Wicklow border, including Kippure and Seefingaun.