|Native name||Bóthar Mhuirfean (Irish)|
|Namesake||Merrion Castle, seat of the Viscounts FitzWilliam|
|Length||2.9 km (1.8 mi)|
|Width||24 metres (79 ft)|
|north end||Ball's Bridge|
|south end||Rock Road, Trimleston Avenue|
|Known for||St. Vincent's University Hospital, Wanderers F.C., Royal Dublin Society, embassies|
There are a number of well-known buildings along Merrion Road. These include the Royal Dublin Society (RDS), the British Embassy, the Catholic church Our Lady Queen Of Peace, the Merrion Shopping Centre, some well known hotels and part of the Embassy Belt, Ballsbridge. Wanderers F.C. (rugby union) and St. Vincent's University Hospital are also located on the road.