Ballymoe () is a barony in County Galway, Ireland.
Ballymoe barony is named after Ballymoe town, County Galway; the name means "mouth of the ford of Mogh"; Mogh is a legendary figure linked to Queen Medb.
Ballymoe barony is located in the northeast of County Galway.
The O'Finnachta (O'Feenaghty) were chiefs in Ballymoe.