Ballyeaston, formerly spelt Ballyistin (from Irish: Baile Uistín, meaning "Uistín's townland"), is a small village and townland in County Antrim, Northern Ireland. It is 2–3 km north of Ballyclare, on the road to Larne. It lies on the southern hill slopes overlooking Six Mile Water. In the 2001 Census it had a population of 90 people.