South William Street, Dublin

William Street South (South William Street)
Clockwise from top: South William Street at its junction with Castle Market; interior of Powerscourt House; South William Street looking northeast
Native namePlás Mhic Liam Theas (Irish)
Postal codeD02
Coordinates53°20′30″N 6°15′46″W / 53.341697°N 6.262876°W / 53.341697; -6.262876
Other
Known forPowerscourt House
City Assembly House
Rag trade

South William Street, (Irish: Plás Mhic Liam Theas) is a street located on Dublin's Southside.