P. J. Carroll & Company Limited, often called Carroll's, is an Irish manufacturing company of tobacco. Having been established in 1824, P.J. Carroll is the oldest tobacco manufacturer in the country, and currently a subsidiary of British American Tobacco.

Scott Tallon Walker is an architecture practice with its head office in Dublin, Ireland and further offices in London, Galway and Cork. It is one of the largest architecture practices in Ireland. Established in 1931 as Scott and Good, becoming Michael Scott Architect in 1938, and Michael Scott and Partners in 1957 before changing to the current Scott Tallon Walker in 1975. Scott Tallon Walker and its earlier incarnations developed a reputation for modernism.