The Irish Genealogical Research Society (IGRS) is a genealogical society established in 1936 with the primary concern at the time being to gather copies of historical materials compiled before the 1992 Great Fire at the Public Record Office in Dublin, Ireland.

They have a free, searchable Dublin Directory from 1803 that can be searched by:

• Surname
• Given Name
• Type of Business
• Street

and sorted by:

• Street, street number, family, given name
• Street, family, given name, street number
• Family, given name, street, street number
• Family, map reference, given name
• Wholesale merchants only

or look at a list of streets and map references.