South William Street, Dublin
Clockwise from top: South William Street at its junction with Castle Market; interior of Powerscourt House; South William Street looking northeast | |
| Native name | Plás Mhic Liam Theas (Irish) |
|---|---|
| Postal code | D02 |
| Coordinates | 53°20′30″N 6°15′46″W / 53.341697°N 6.262876°W |
| Other | |
| Known for | Powerscourt House City Assembly House Rag trade |
South William Street, (Irish: Plás Mhic Liam Theas) is a street located on Dublin's Southside.