William Street (Irish: Sráid Liam) is one of the main thoroughfares of central Limerick City, Ireland.

The street is named after William Pery, 1st Baron Glentworth a relation of Edmund Sexton Pery who is credited with the development of the present day Limerick City Centre area known as Newtown Pery.

[1] The street is architecturally Georgian in style like much of the Limerick City Centre area.

There was a major fire on William Street in May 1860.

[2] Prior to the construction of the Limerick Southern Ring Road the street formed part of the N24 route between Limerick & Waterford.