The R133 road is a regional road in south Dublin, Ireland. The road starts at Goatstown and runs in a southerly direction towards Sandyford before acting as a link road for the M50.

Between its junction with R113 at Motorway Service Road and its junction with R112 at Mount Anville Road via Drummartin Link Road, Drummartin Road and Lower Kilmacud Road all in the county of Dun Laoghaire — Rathdown.

• Roads in Ireland
• National primary road
• National secondary road

• Roads Act 1993 (Classification of Regional Roads) Order 2006 – Department of Transport