Conwy (/ˈkɒnwi/, Welsh: [ˈkɔnʊɨ] ^ⓘ), previously known in English as Conway, is a walled market town, community and the administrative centre of Conwy County Borough in North Wales. The walled town and castle stand on the west bank of the River Conwy, facing Deganwy on the east bank. The town formerly lay in Gwynedd and prior to that in Caernarfonshire. The community, which also includes Deganwy and Llandudno Junction, had a population of 14,753 at the 2011 census.

Postal addresses do not follow the community boundaries. On the east bank of the river, Deganwy forms part of the Conwy post town, but Llandudno Junction is a separate post town. The ward on the west bank of the river had a population of 4,065 at the 2011 census.

The resident population of the wider Conwy County Borough was estimated to be 116,200 in an ONS-estimate.

The name 'Conwy' derives from the old Welsh words cyn (chief) and gwy (water), the river being originally called the 'Cynwy'.

Conwy Castle and the town walls were built, on the instructions of Edward I of England, between 1283 and 1289, as part of his conquest of the principality of Wales. The church standing in Conwy has been marked as the oldest building in Conwy and has stood in the walls of Conwy since the 14th century. However, the oldest structure is part of the town walls, at the southern end of the east side. Here one wall and the tower of a llys (palace/court house) belonging to Llywelyn the Great and his grandson Llywelyn ap Gruffydd have been incorporated into the wall. Built on a rocky outcrop, it has a prominent apsidal tower.

The walls are part of a World Heritage Site, Castles and Town Walls of King Edward in Gwynedd.

People born within the town walls of Conwy are nicknamed "Jackdaws", after the jackdaws which live on the walls there. A Jackdaw Society existed until 2011.

The population of the town in 1841 was 1,358.